Ovulation implantation and pregnancy test

8 Early Signs And Symptoms Of Pregnancy Implantation

November 21, 2017

Untimely bleeding is frustrating, especially when you are planning for pregnancy. But do not get disappointed as this bleeding could indicate something good for you. It could be implantation bleeding, a normal physiological process in any pregnancy, and one of the early symptoms of pregnancy. Read this MomJunction post to know more about implantation, its stages, symptoms and how you can confirm that.

What Is Implantation?

Implantation (of the human embryo) is the attachment of the fertilized egg (the blastocyst) to the lining of the uterus to grow and develop. It is an entirely natural process that happens a week after ovulation and is an early stage of pregnancy.

One-third of women experience implantation bleeding but is mistaken for menstruation as it happens at the same time of your cycle.

When Does Implantation Occur?

In most cases, implantation takes place around nine days after ovulation, but sometimes it can occur as early as seven days or as late as 12 days. So, if ovulation takes place on the 14th day after a period (average 28-day cycle), implantation can occur on the 23rd day.

Implantation Calculator

During ovulation, the ovaries release the eggs. When the sperm enters the fallopian tube, it fertilizes the egg within 12 to 24 hours of ovulation. The fertilized egg, known as a zygote, then travels down the fallopian tube. During this time, the zygote multiplies several times to form a blastocyst, which enters the uterine cavity in five to six days after fertilization. It then implants to the uterus in a day or two. Therefore, the whole process from fertilization to implantation takes six to ten days. This means implantation occurs between the 20th and 24thday of your regular menstrual cycle.

Stages Of Implantation:

The embryo implantation occurs on the sixth or seventh day after ovulation. This process has three stages:

  • In the first stage, the embryo attaches to the uterine wall (the lining is endometrium). This initial phase of the implantation process is called adplantation. During this stage, the embryo is about five to six days oldВ [1].
  • In the second stage, the fertilized egg penetrates the uterine wall so that it is secure in the uterus. This process is adhesion of the blastocyst to the endometrium.
  • In the third stage, the embryo finally embeds deep inside the uterine wall. At this point, the ovum is located in the endometrial cavity, and as the endometrium grows, the cavity is wrapped better.

Common Signs And Symptoms Of Pregnancy Implantation:

Every pregnancy is different, and so are the implantation symptoms. They may also differ from the first pregnancy to the subsequent ones. Some women do not notice any symptoms associated with implantation. Listed below are the possible implantation signs that would help in confirming your pregnancy.

В 1. Implantation bleeding or spotting:

It is one of the primary symptoms of implantation, and probably an accurate sign of gestation. This happens when the embryo embeds into the uterine wall. So, if you notice light bleeding or spotting before the onset of your period, you do not have to worry.

But what does implantation bleeding look like? It is pinkish, scanty and not as red and heavy as the period bleeding. It is not consistent and does not form clots. The bleeding may be on and off and lasts from a few hours to two days.

2. Implantation cramping:

The second common symptom after spotting is implantation cramping, which is similar to period cramping. However, these cramps are milder and are less painful. So, where does implantation cramping occur? You will experience them in your back and lower abdomen and last for a couple of days. They are sometimes associated with continuous contractions in the uterine wall. If the cramping is severe and unbearable for a long time, it is advisable to see your healthcare provider.

3. Breast changes:

Soon after implantation, your body begins to change. Breasts undergo changes such as tenderness, soreness, and swelling. It is due to the changing female hormone levels after conception. In some cases, these changes are visible during ovulation as well as a week after ovulation.

4. Increased basal body temperature:

The basal body temperature (BBT) is high during implantation and can be a way to determine pregnancy. You may not necessarily track your body temperature unless you are trying to get pregnant. Therefore, you must chart your daily temperature, and see if it is increasing. The BBT rises at the time of ovulation due to increasing progesterone hormone and remains elevated when implantation occurs.

5. Frequent urination:

The urge to urinate increases within a week of implantation. Your body undergoes massive changes to make room for the baby. Increased blood supply to the pelvic area puts pressure on your bladder. This pressure increases your urge to urinate.

6. Food cravings/aversion:

This is another prominent sign of implantation. The hormones produced as a result of implantation tend to alter the woman’s likes and dislikes for food. You may crave for foods you have not tasted before or dislike foods you once loved. However, any cravings or aversions for food within seven days of ovulation cannot be considered an implantation symptom.

7. Hot flashes:

They are less common signs of implantation and last for about 15 minutes at the time of implantation. During implantation, the hormone levels rapidly fluctuate causing hot flashes. Though it is an inconsistent sign, you may still consider it in association with the other symptoms.

8. Cervical mucus:

An increase in the progesterone levels after implantation triggers the cervix to swell and increases the blood flow to it. Additionally, the glands enlarge and the hormones stimulate the glands to produce more cervical mucus. The mucus thus contains some blood, which is why cervical mucus after implantation looks pinkish or brownish in color.

While the above signs could determine your pregnancy, you cannot be sure until you take a test. Moreover, remember that not every woman has these signs.

How To Confirm If Your Implantation Is Successful?

The only way to confirm your pregnancy is through a pregnancy test. If you notice any spotting, i. e., implantation bleeding, wait for about three days and take a home pregnancy test. The later you take the test, the more are the chances of getting an accurate result as your hCG levels increase.

Another way of confirming implantation is going for a sonogram to know if the embryo is attached to the uterine wall. After three to four weeks of implantation, you can see the fetus in the uterus. However, sonogram could have an adverse effect on the sensitive process of implantation and fetal development.

Experiencing signs, but got a negative test result?

You may be having the signs of a successful implantation, but may end up with negative test results. This may be because of insufficient hCG hormone. In some cases, it will take up to ten days post implantation to have enough hCG in the body to give positive results. Therefore, be optimistic and be patient.

How To Increase Your Chances Of Implantation?

The two weeks after a menstrual cycle are stressful if you are planning to get pregnant. The elevated stress levels prevent conception by disrupting the hormone levels. Therefore, you need to know ways to improve the chances of successful implantation.

The following are the practical ways to make your two weeks wait enjoyable:

1. Balanced diet for healthy hormonal levels and uterine lining:

  • Fiber-rich foods promote healthy estrogen levels, metabolism, and digestion. Eat dark leafy greens such as collard, kale or beet greens, ground flax seeds, soaked seeds and nuts, and whole grains. Have about 28 grams of fiber every day.
  • Super foods support healthy hormonal levels. Include coconut oil, cod liver oil, goji berries (Arctium lappa) and maca (Lepidium meyenii) in your diet.
  • Support the healthy growth of uterine lining by taking pregnancy-safe herbs and blood nourishing foods. Consume herbs such as hibiscus, nettle, red raspberry leaf and yellow dock infusions or extracts. Blood nourishing foods include salmon, grass fed meats, sunflower and pumpkin seeds, spirulina and quinoa.
  • Include foods that increase your body temperature. When progesterone levels raise the body’s temperature also raises. Therefore, a warm womb is an ideal environment to support a new life. Try taking stews and soups with some warming herbs such as cinnamon, ginger, and cayenne.

2. Generate good feelings:

You may have high expectations during the two weeks of wait for the good news. You are overwhelmed with anticipation and anxiety. This could release stress hormones which prevent your body from conceiving.

Keep your cool during this period. Dream about getting pregnant but do not make it your obsession. Keep yourself busy and take up the tasks that you love to do. This will keep your emotions under check.

3. Rethink about natural therapies, herbs and supplements you are already taking:

Certain natural therapies will affect the uterus and thus prevent implantation. Avoid practices such as castor oil packs, self-fertility massage, Maya abdominal massage and Radiant Womb therapeutic oil. All of these therapies are fine before ovulation but not at the time of implantation.

You can continue with acupuncture and herbal programs and prenatal vitamin supplements.

4. Take enough rest and nurture yourself:

While waiting for your pregnancy news, you might often observe yourself clenching your jaw, tummy or holding your shoulder high, which are all signs of stress. Try to avoid the thoughts and jobs that make you feel stressful. Have a healthy environment at home and work.

  • Go to sleep early, and take naps in the day.
  • If you are into running or heavy exercises, shift to brisk walking or fertility yoga.
  • Nest your womb, which means make it a safe environment for inviting the baby.
  • Get a massage, get around with your dear ones, plan for a calm outing.

5. Believe in yourself:

You may not get pregnant if you doubt your abilities to give birth to a baby. Change your thought pattern, and believe in yourself. Negative thoughts could alter hormonal balance, thus affecting your chances of healthy ovulation, implantation, and pregnancy.

Positive affirmations, counseling, and meditation will help you to think positive about your body and inner self. However, it is not going to happen overnight. So, be gentle while you shift to a positive approach.

Why Does Abnormal Implantation Occur?

In rare cases, some women could experience abnormal implantation that leads to pregnancy loss. Those rare circumstances include:

1. Ectopic pregnancy:

When the fertilized egg implants outside the cervix, it is called ectopic pregnancy. Usually, the implantation occurs in the fallopian tube when the embryo fails to descend to the cervix. In the process, it can, sometimes, attach to the ovary or the abdomen. This type of pregnancy has to be terminated medically, and this can lead to heavy implantation bleeding and rupture. It, therefore, reduces the chances of conception in the future.

2. Hydatidiform mole:

This occurs when the rapidly dividing blastocyst implants itself to the uterine wall but does not develop into a full-fledged embryo. Instead of an embryo, the blastocyst turns into a tumor. You may experience all the signs of pregnancy and may even get confirmed pregnancy test results due to the production of hCG by the tumor cells. Only an ultrasound can determine the presence of hydatidiform mole.

3. Problems with the placenta:

Abnormalities related to the placenta are dependent on where the implantation takes place. If the function of the placenta is adversely affected, the pregnancy will not continue. Placental problems lead to pregnancy loss, and an early loss is called a miscarriage. If placental abnormalities occur later in the pregnancy, they result in pre-term birth, causing complications for the mother and the baby.

Implantation is the first step of pregnancy. It could be so subtle that you may not even realize that it has happened inside your body. But when your urge to get pregnant is high, you tend to relate every minor change in your body to pregnancy. The key is not to get anxious for the result or disappointed if the result is negative. The next menstrual period is just around the corner!

Frequently Asked Questions:

How long does implantation bleeding last?

Implantation bleeding lasts for a few hours to two days. In rare cases, it may continue for more than two days. The length usually depends on the amount of blood that is released in the process of embryo implantation, and the time it takes for the body to get rid of it.

How long does implantation cramping last?

Implantation cramping lasts for five minutes. In some cases, the cramps will last for less than five minutes or up to two days.

What do implantation cramps feel like?

They are like a light pricking or pulling pain in the lower abdomen, and start about a week before your period is due. Some women may experience only a single episode of it, while some others will have occasional cramping.

Have any questions to ask or experiences to share? Do write them in the comment section below.

How Long After Ovulation Does Implantation Occur? 3-12 Key Days

How long after ovulation does implantation occur? You certainly need to know the answer to this question not to miss the very beginning of your pregnancy. You may experience specific implantation symptoms which are not always very evident, so you have to be attentive. Women are usually very excited when they manage to detect their interesting position before pregnancy tests. The article will guide you in this direction. Read on and find out more information about the process of conception and egg implantation!

Ovulation, Fertilization, Implantation

This is what precedes your pregnancy. Every stage plays an important role and occurs within specific time intervals you need to know. Let’s answer such questions as:

How long after ovulation does implantation occur? You certainly need to know the answer to this question not to miss the very beginning of your pregnancy. You may experience specific implantation symptoms which are not always very evident, so you have to be attentive. Women are usually very excited when they manage to detect their interesting position before pregnancy tests. The article will guide you in this direction. Read on and find out more information about the process of conception and egg implantation!

Ovulation, Fertilization, Implantation

This is what precedes your pregnancy. Every stage plays an important role and occurs within specific time intervals you need to know. Let’s answer such questions as:

– When does ovulation occur?

Usually, ovulation happens in the middle of your menstrual cycle. But your organism doesn’t work as a clock. So, how can you approximately calculate the date of ovulation? Subtract 12-16 days from the length of your cycle. Ovulation should occur during this period. However, it can also happen a few days earlier or later. That’s why, if you have a regular 28-day cycle, ovulation will happen between the 12th and 17th days. If your cycle is irregular, a mature ovum may be released even a week earlier or a week later. Besides, this scheme doesn’t exclude the possibility of getting pregnant on other days of the cycle. Everything is individual. Women just have fewer chances to conceive in the beginning and at the end of the cycle. For instance, you may have 2 ovulations during 1 cycle or your ovulation can occur later than usually. Moreover, sometimes as a result of the hormonal imbalance you may have an anovulatory cycle, during which an ovum is not released from the ovaries. So, women use different methods for ovulation detection, such as measuring basal body temperature, ovulation tests, monitoring of cervical mucus, and ultrasound. You may choose the most comfortable for you. All of them are more or less accurate.

– When does fertilization occur?

Fertilization occurs within 12-24 hours after ovulation. Only during this short period ovum stays alive. As you see, even absolutely healthy couples don’t always manage to conceive during the first few months of pregnancy planning. They simply can’t trace properly and catch the most fertile period. So, if you also belong to such pregnancy planning couples don’t be upset and don’t give up. Take your BBT on a daily basis, make your period calendar, and try to take into account even the slightest changes in your body. Write down all the information in special charts and finally luck will come in your way. Remember, you may use a paper diary for this purpose, or special on-line services, which are even more comfortable and flexible. You may not only record your data here, but also calculate the most fertile days and the possibility of ovulation occurrence. Moreover, read our articles and find out more information about conception, early implantation and early pregnancy symptoms!

– How long after ovulation does implantation occur?

How many days after ovulation does implantation happen? В To determine when embryo implantation happens, you need to know the ovulation date for sure. The most widespread time for implantation is the 9th day after ovulation (DAO). Nearly 40% of all women have conceived on the 9th day after the moment of their ovulation.

How long does implantation take? Post fertilization the egg travels through the Fallopian tubes into the uterine cavity. During a 6-7-day “trip” the egg is actively dividing, undergoing different stages of formation: a zygote transforms into a morula, a morula finally becomes a blastocyst. Another 2-3 days the future embryo is moving freely in the uterine cavity, finishing preparation for implantation. What about other women? When does implantation occur in other cases? The terms can be shifted back or forth: the earliest implantation occurs on the 3-5th day after ovulation, the latest on the 12th. Many women ask whether egg attachment can happen after a delay in period. Not likely, but everything is possible. This can happen if your cycle is not regular.

Okay, now you know when to expect implantation, but how will you know that it’s really happening? Note that signs of implantation aren’t experienced by all women. However, if you are generally sensitive and attentive you may be the lucky one. So, have patience and wait for the first swallows. What signs to look for – read further!

Implantation Symptoms

The process of implantation lasts from several hours to several days. What symptoms of egg embedment can you feel and see during this period? To tell you the truth, you will experience almost no signs. However, there are several symptoms you must pay attention to:

ВЂў Implantation spotting.

Approximately 30% of women have light pinkish discharge that looks like just a few drops of blood in cervical mucus. They experience such spotting during the process of implantation. It may last from several hours to a few days, but not more than 3 days.

After blastocyst has embedded into the uterine endometrium, it begins to support its vital activity at the expense of the mother’s organism. It excretes some products of its vital functions. This is the main reason for the beginning of the well-known pregnancy toxicosis.

ВЂў Progesterone level changes.

Placenta starts producing much more progesterone, than usual. This process induces an insignificant rise in woman’s body temperature. Progesterone level can be checked only by a special blood test.

ВЂў Implantation cramping.

Gynecologists usually doubt whether such cramps can be felt at all, but they suppose such a possibility. Early pregnancy cramps are sensed in the lower abdominal area. They are mild and not bothering. If you feel such spasms too often, tell this fact to your gyn immediately, in such case they are rather abnormal.

Now you know what to expect and when, while planning pregnancy. In the very beginning of your term any specific signs though can be too vague to notice. Don’t worry; very soon your interesting condition will remind you of itself. Just make sure implantation went successfully and you are really pregnant. A home pregnancy test, blood tests or gyn-examination will help you to deal with your feelings and get ready for the next joyful 9 months.

Implantation

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In order for implantation to take place, ovulation and fertilization must occur first. Implantation happens early in the pregnancy stage after the fertilized egg (zygote) travels down the fallopian tube to the uterus and adheres to the epithelium, or uterine lining. It takes about eight to 10 days for the fertilized egg to travel to the uterus. During that time, it develops into a blastocyst through several stages of transformation—beginning as a single cell that divides into about 150 cells, with an outer layer (the trophoblast), a fluid-filled cavity (the blastocoel), and a cluster of cells on the interior (the inner cell mass). This tiny ball of cells is about the size of a poppy seed. It adheres to the epithelium during week 4 of gestation. Once it is firmly attached, it is called an embryo. The embryo will then divide into two parts that will become the placenta and the fetus—your future boy or girl.

An ultrasound examination done during weeks 5 to 6 of gestation may show the amniotic sac (or bag of waters) and yolk sac, which are forming at this time. The amniotic sac is where your baby will develop. The yolk sac will later be incorporated into your baby’s digestive tract. This ultrasound finding confirms that implantation has taken place and that your road to parenthood has begun.

Implantation and Pregnancy Testing

When implantation takes place, the cells that form the placenta produce the hormone human chorionic gonadotropin (hCG). In a healthy pregnancy, the level of hCG will rise rapidly and can be detected in your urine by a home pregnancy test 8 to 14 days after conception (fertilization) and in your blood by a test done at your practitioner’s office as early as 6 days after implantation—before your first missed menstrual period.

The function of hCG is to “tell” the corpus luteum to continue producing progesterone, which is necessary for the successful maintenance of pregnancy. Because of its important role in the development of the fetus, the hCG level is an excellent indicator of pregnancy. When using a home pregnancy test kit, keep in mind that its accuracy is greatly affected by the timing of when the test is taken, the test’s sensitivity, and correct usage. Also, hCG levels can vary tremendously among women. Taking the test too early could lead to a negative result if your hCG level is too low to be detected by the test you used. On the other hand, an early test could show a positive result, but a later test may be negative. This happens in a chemical pregnancy, in which the fertilized egg begins to implant in the uterus, but for some reason it does not complete implantation. Many chemical pregnancies pass unnoticed as a late period. To ensure the most reliable result, perform a home pregnancy test one to two weeks after you miss your period.

Implantation Bleeding

You may be one of the few women who experience staining or spotting when implantation happens. “Implantation bleeding,” as it is called, may occur 10 to 14 days after fertilization and is normal and temporary. The attachment of the fertilized egg to the uterine lining is believed to cause the bleeding. It is possible to mistake implantation bleeding for your period, because both take place around the same time of your menstrual cycle. However, implantation bleeding is typically of a shorter duration and much lighter than menstrual bleeding.

If you had a lighter than normal period along with the more common early symptoms of pregnancy, including breast changes, bloating, fatigue, frequent urination, and nausea (read about these symptoms by following the links), you should consider taking a home pregnancy test. If you are pregnant, the earlier you begin prenatal care, the better. Vaginal bleeding that persists or that is accompanied by unusual pain or cramping could be sign of an abnormal implantation. This warrants immediate medical attention.

Why Implantation Succeeds

One of the mysteries of conception has been why the mother’s body does not reject the fertilized egg from implanting. Technically, the blastocyst is a group of foreign cells in the body and a natural response of the immune system is to seek out and destroy such cells. Several mechanisms are thought to prevent your body from rejecting implantation:

Maternal immune cells are silenced – The maternal immune cells are silenced or disabled by chemokine secretion and by corticotropin-releasing hormone secretion by the mother and the blastocyst.

Decidualization – There is a decidual reaction that takes place after implantation; the decidua is the part of the mucous membrane lining the uterus that undergoes special modifications in preparation for and during pregnancy. This reaction is promoted by the mother’s hormones, estrogen and progesterone, and creates a friendly environment for the embryo to develop.

Cervical mucus plug – Estrogen stimulates production of a cervical mucus plug from glands at the opening of the uterus, the cervix, where it joins the vagina. This plug acts in a mechanical and antibacterial manner, protecting the interior of the uterus.

Abnormal Implantation

Abnormal implantation of a fertilized egg often leads to pregnancy loss. Fortunately, this is a rare occurrence and most women experience normal pregnancies. An implantation is considered abnormal in the following circumstances:

Ectopic pregnancy – In an ectopic pregnancy, the blastocyst implants outside the uterus. This most commonly occurs in the fallopian tube but can also occur in the cervix, on the ovary, or in the abdomen. An ectopic pregnancy has to be removed, either surgically or with medication, to avoid rupture of surrounding structures, which can result in severe bleeding and shock. Rupture could greatly reduce the chances of conceiving in the future and can be life-threatening to the mother.

Hydatidiform mole – A hydatidiform mole may occur when a blastocyst implants but no embryo develops. Instead, a tumor arises in its place. The mother may experience symptoms of pregnancy and may test positive on a home pregnancy test because the cells in the tumor will produce hCG. An ultrasound examination that shows the absence of an embryo confirms the diagnosis of hydatidiform mole.

Problems with the placenta – A variety of placental abnormalities can occur depending on the site of implantation. If any of the functions of the placenta are impaired, a pregnancy may not be able to continue to full term. Problems with the placenta are a common cause of pregnancy loss. When they occur early in pregnancy, the result is often a miscarriage. Later in pregnancy, a placenta problem results in pre-term delivery. However, it could cause complications, or death, in both the mother and baby.

Positive Pregnancy Test: When And How Early After Implantation?

When is the urine hCG test positive after implantation?

A blood pregnancy test is usually positive 3-4 days after implantation and a urine pregnancy hCG test is usually positive several days later or about 4-5 days after implantation.

You want to take a pregnancy test, but you have questions: How long do I have to wait after a missed period before I take a test? How long after implantation can I test? It can be confusing.

A positive pregnancy blood test first happens about 3-4 days after implantation bleeding and about 4-5 days before a missed period. T he early urine home positive pregnancy test (HPT) can usually detect pregnancy 6-7 days after implantation. Sometimes it can be as early as 2-3 days before the missed period. Implantation usually happens about 9 days (range 6-12 days) after ovulation, fertiliziation or about 8 days before the next period.

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How early can I take a pregnancy test?

The Implantation Calculator will calculate for you the indivual dates of implantation as well as when to take the pregnancy test.

An early pregnancy test becomes positive only after the fertilized egg has arrived inside the uterus and implanted into the uterus and then sent enough amounts of hCG, human chorionic gonadotropin, the pregnancy hormone, into your blood stream and from there into the urine.

The urine pregnancy test (home pregnancy test or HPT) checks for the presence of the pregnancy hormone hCG in the urine. hCG is made by the implanting blastocyst and first appears in the maternal blood around implantation, on average 9 days (range: 6-12 days) after ovulation. Blood hCG levels then rise rapidly to reach a peak at 7-10 weeks. They decline after that time.

You can interactively and for free do our online pregnancy test to find out if you are pregnant or not HERE.

A negative HPT result 10+ days after the missed period makes a pregnancy unlikely. With the present generation of test kits, false-positive results due to interfering materials are extremely unlikely. Pregnancy tests have now reached a level of sensitivity and specificity that is unlikely to be surpassed either by better tests or alternative technology.

Positive pregnancy test results can show up any time before or after a missed period. Read below more about when the pregnancy test result first becomes positive.

The early urine ept HPT pregnancy test result is usually positive within 10-12 days after ovulation which is about 3-4 days after implantation

An early pregnancy test result checks for the presence of the pregnancy hormone hCG human chorionic gonadotropin in the urine.

HCg is detectable in the blood only after implantation. Implantation, the attachement of the fertilized egg to the uterus, happens on average 7-9 days after ovulation with a range of 6-12 days. You need to find enough hCG in the urine to get a positive pregnancy test, and with most current pregnancy test kits (sensitivity 25 milli-international units per milliliter) the pregnancy hormone hCG can be detected in the urine as early as 3-4 days after implantation (9-15 days after ovulation), though oftentimes it can take longer because the urine may be diluted or there is not enough hCG yet in the urine, or implantation happens later than extected. Our pregnancy calendar will help you calculate the due date and other important dates, and our ovulation calendar will calculate your fertile days.

Here are the expected positive positive home pregnancy tests in women who are pregnant based on a scientific study:

Expected Period (EP)

Pregnancy Test Positive?

  • About one in two HPTs are expected to be positive 2-3 days before a missed period
  • Three in four HPTs are expected to be positive on the day you miss your period

  • A negative pregnancy test on the day of a missed period is normal in about one in four pregnancies, and within the next 4-5 days most HPTs usually have become positive.

  • A negative HPT result 10+ days after the missed period makes a pregnancy unlikely.

    From: Wilcox in JAMA 2001; 286:1759

    Positive Blood Pregnancy test

    The blood pregnancy test is usually positive within 3-4 days after implantation or about 9-10 days after fertilization and ovulation. About 5-6 days before a missed period

    Positive Urine early home Pregnancy Test (HOME HPT)

    The early positive urine pregnancy test will become positive about 2-3 days after the positive blood test or about the time of a missed period, and sometimes a couple of days before the missed period. About 25% of pregnant women will test positive with the early home pregnancy test about 2 days before a missed period, and about 40% the day before the missed period.

    The wide variation of when the urine pregnancy test becomes positive and how early pregnancy can be detected are due to four variables which determine when the home urine pregnancy test becomes positive:

    1. Timing of Implantation

    A pregnancy test detects the presence of the pregnancy hormone hCG (human chorionic gonadotropin) either in the blood or in the urine only after implantation. Implantation can happen as early as six days and as late as 12 days after fertilization/ovulation. At the time of implantation the placenta starts making the pregnancy hormone hCG, which then enters the blood stream. How early pregnancy can be detected depends on the pregnancy hormone hcG which can be detected in the blood about three to four days after implantation. Urine hCG can be detected about two to three days after blood hCG can first be seen. Detection of hCG depends on timing of implantation, so hCG can normally be detected in the blood between nine and 16 days after ovulation (HPT: 12-19 days after ovulation).

    2. Blood hCG Level

    There is a wide normal variation of hCG levels, both in the blood and the urine and this wide range changes the diagnosis of how early can pregnancy be detected. If a woman has a normal but low blood hCG levels, then it can take several more days for it to show up on a pregnancy test.

    3. Urine hCG level

    Urine hCG levels change over the course of the day depending on how much you drink and how diluted or concentrated the urine is. Urine pregnancy testing is best done with more concentrated urine. So how early can pregnancy be detected depends on the urine concentration and the quality of the early pregnancy test. If you drink a lot of fluid, the urine may be too diluted early on in pregnancy to achieve an hCG concentration adequate enough for a positive test.

    4. Sensitivity of the Early Urine Home Pregnancy Test

    Different pregnancy tests have different sensitivities and that has an impact on how early can pregnancy be detected. The lower the sensitivity, the earlier a pregnancy test becomes positive. Sensitivities are indicated in mIU/mL, the lowest amount of hCG in the urine that tests positive. A sensitivity of 20 mIU/mL requires one-half the hCG level to be positive when compared with a 40 mIU/mL sensitivity level, and it may become positive several days earlier than the pregnancy test with a higher sensitivity. Make sure you read the package of the pregnancy test to determine your pregnancy test’s sensitivity.

    A positive pregnancy test occurs only after the fertilized egg has implanted into the uterus and sent enough hCG (i. e. the “pregnancy hormone”) into your blood stream. So the first positive pregnancy test does not usually happen until a couple of days prior to the next expected period. If it is truly positive then it’s highly likely that you are pregnant because false positive pregnancy tests rarely occur.

    CALCULATOR: When to take the pregnancy test

    After ovulation and fertilization the fertilized egg or blastocyst takes 4-5 days to travel through the Fallopian tube towards the uterus and it then usually implants inside the uterus. Implantation, when the fertilized egg the embryo implants into the endometrium, happens about 9 days after ovulation (range: 6-12 days), and it takes another 3-4 days after implantation (9-10 dpo: days after ovulation) for the blood pregnancy test to first become positive.

    • Blood Pregnancy Test: If you are pregnant then the blood pregnancy test is usually positive within 3-4 days after implantation or about 9-10 days after fertilization and ovulation.

    • Urine Home Pregnancy Test (HPT): The urine pregnancy test will usually not become positive in most women until a missed period or about a week after implantation. The urine test is usually positive at a missed period, but only about 25% of pregnant women will test positive with the HPT 2 days before a missed period, and about 40% the day before the missed period. On average, a pregnancy test will be positive 13-14 days after ovulation and fertilization, or about the time you expect your menstrual period.

    The amount of time it takes for a pregnancy to be detected and the wide variation of time it takes for a urine pregnancy test to become positive is due to five variables:

  • Timing of implantation

  • A woman’s weight (being overweight lowers the hCG)

  • Urine hCG level (e. g. how concentrated or diluted the urine is)

  • Sensitivity of the pregnancy test

    1. Timing/Day of Ovulation : A pregnancy test depends on the day of implantation and the urine pregnancy test is usually positive 4-5 days after implantation. However, the day of ovulation is important too, as implantation can only happen if ovulation took place and the egg was fertilized. Therefore, if your day of ovulation was later than you thought, implantation and subsequently the positive pregnancy test will also be delayed. This is why it is really important to keep track of your ovulation day (OD) so you can start counting the days to implantation and eventually the positive pregnancy test.

    2. Timing of Implantation: A pregnancy test detects the presence of the pregnancy hormone hCG (human chorionic gonadotropin) either in the blood or in the urine. The hCG in the urine comes from the hCG in the blood after being filtered through the kidney. After ovulation, the egg gets fertilized and travels through the fallopian tube toward the uterus. This journey takes about a week on average. Implantation, the attachment of the fertilized egg to the lining of the uterus, occurs on average about a week or so after ovulation/fertilization, but it can happen as early as six days and as late as 12 days after fertilization/ovulation. At the time of implantation, the placenta starts making the pregnancy hormone hCG, which then enters the blood stream. How early a pregnancy can be detected depends on the pregnancy hormone hcG, which can be detected in the blood about three to four days after implantation. Urine hCG can be detected about two to three days after the blood hCG can first be seen. Detection of hCG depends on timing of implantation, so hCG can normally be detected in the blood between nine and 16 days after ovulation (HPT: 12-19 days after ovulation).

    3. Blood hCG Level: There is a wide variation of “normal” hCG levels, both in the blood and the urine. This wide range changes the diagnosis of how early a pregnancy can be detected. If a woman has low blood hCG levels, for example, it can take several more days for it to show up on a pregnancy test. If a woman is overweight, with a high BMI, then the blood hCG levels are often lower.

    4. Urine hCG Level: Urine hCG levels change over the course of the day depending on how much you drink and how diluted or concentrated the urine is. The time it takes for a pregnancy to be detected depends on the urine concentration. If you drink a lot of fluid, the urine may be too diluted early to achieve an hCG concentration adequate enough for a positive test. Urine pregnancy testing is best done with more concentrated urine.

    5. Sensitivity of Urine Home Pregnancy Test: Different pregnancy tests have different sensitivities, which affects how soon a pregnancy can be detected. The lower the sensitivity, the earlier a pregnancy test becomes positive. Sensitivities are indicated in mIU/mL, the lowest amount of hCG in the urine that tests positive. A sensitivity of 20 mIU/mL requires one-half the amount of hCG to be positive as a test with a 40 mIU/mL sensitivity level; it may become positive several days earlier than the pregnancy test with a higher sensitivity. Make sure you read the package of the pregnancy test to determine your pregnancy test’s sensitivity.

    Spotting and positive pregnancy test

    Some bleeding early in pregnancy, maybe some drops or brown discharge, is also called ‘spotting.’ Spotting happens in 20-30% of pregnant women, usually around the time of the missed period, and most women with spotting continue and deliver a healthy baby. Implantation bleeding usually happens 5-6 days after ovulation. If your pregnancy test is positive, then implantation happened at least 4-5 days ago and it’s unlikely that the spotting represents implantation bleeding. If you have a positive HPT and you experience spotting with pain and cramping, you should contact your doctor right away. Your doctor can check the viability of your pregnancy by doing two hCG blood tests 48-72 hours apart. If the hCG levels more than double, then you have a viable pregnancy.

    По материалам:

    Http://www. momjunction. com/articles/pregnancy-implantation_00386827/

    Http://implantationbleed. com/how-long-after-ovulation-does-implantation-occur-3-12-key-days/

    Http://www. pregnancycorner. com/getting-pregnant/fertility/implantation. html

    Http://www. babymed. com/positive-pregnancy-test-when-and-how-early-after-implantation

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