BFP After period

Imagine this scenario: You’ve been eagerly trying to get pregnant, counting days, observing signs, and tracking your menstrual cycle. Then comes the period, a bit of a disappointment, but you move on to try again in the next cycle. However, soon after your period ends, you decide to take a pregnancy test, and you’re shocked – it’s a Big Fat Positive (BFP)!

Wait, a BFP after period? Is that even possible? If this sounds confusing to you, you’re not alone. Many women are surprised when they receive a positive pregnancy test result soon after what they believed to be their period.

This phenomenon is more common than you might think and is often due to mistaking implantation bleeding for a regular period. So, let’s delve into this fascinating topic and uncover how a BFP after period is indeed a possibility

Common Misconceptions About BFP After Period

The journey to conceive can be filled with many ups and downs. When you’re trying to get pregnant, it’s essential to be aware of the signals your body sends you. A common misconception is mistaking implantation bleeding for a normal period ( AF – Aunt Flo ). It can lead to a scenario where one receives a BFP after they believe their period has ended.

The Connection Between BFP and Pregnancy


Decoding Pregnancy Test Results

A positive pregnancy test indicates the presence of the hormone hCG in your pee, which is only present when a fertilized egg has implanted in the uterus. But what if you get a positive pregnancy test result right after what seemed like a normal period? It might seem baffling, but here’s what’s going on.

Early Pregnancy Signs

Early pregnancy can come with various symptoms, including spotting, cramps similar to PMS, or even light bleeding. Don’t mistake these signs for a period; they could be the first indicators of your BFP!

The Role of Ovulation in Pregnancy

Ovulation plays a significant role in pregnancy. During your menstrual cycle, an egg is released ( you ovulate) around the same time each month. If sperm fertilizes this egg inside of your body, it travels to implant in the uterus lining, marking the start of pregnancy.

An ovulation test can help track your fertile days to increase your chances of conception.

What is considered a late BFP?

A late Big Fat Positive (BFP) refers to getting a positive pregnancy test after the expected time frame, often after a missed period. While every woman’s cycle is unique, the general timeline typically follows this pattern:

Upon ovulation, your body releases an egg, ready to be fertilized. If sperm meets egg, conception can occur, leading to pregnancy. This usually happens around 14 days into your menstrual cycle, known as ’14 days post ovulation’ or ’14 dpo’.

Now, when it comes to testing for pregnancy, hCG (human chorionic gonadotropin), the pregnancy hormone, starts to increase in your body immediately after implantation. Most pregnancy tests are designed to detect this hormone.

However, the levels of hCG can vary widely between women and different pregnancies, which can impact when a pregnancy test turns positive.

Typically, a positive pregnancy test can be seen as early as 9 to 14 dpo, a few days before or just after a missed period. But, if you’re getting negative results (BFN – Big Fat Negative) during this time, it doesn’t necessarily mean you’re not pregnant.

You might just be testing too early, before your body has produced enough hCG for a test to detect.

A late BFP, then, is when you get a positive pregnancy test result after 14 dpo, sometimes even several weeks into your pregnancy. This could happen if you ovulated later than usual in your cycle or if your body is producing hCG at a slower pace.

Regardless, once you get a positive pregnancy test, you are considered pregnant, no matter how far along you are. It’s important to confirm your pregnancy with a healthcare provider to understand better how many weeks pregnant you are and what to expect moving forward.

Reasons for late BFP

A late Big Fat Positive (BFP), or a positive pregnancy test after the expected time frame, can happen due to several reasons. If you’ve been trying to conceive and have been anxiously waiting for a positive result, a late BFP can cause a whirlwind of emotions.

However, understanding the potential reasons behind a late BFP can help demystify this complex process.

1. Late Ovulation: The timing of ovulation can greatly impact when you get a BFP. Ovulation typically occurs around the midpoint of your menstrual cycle ( about 14 days from the day of your last period , Day 1 is the first day of your period).

However, various factors like stress, illness, or disruption in your regular routine can delay ovulation. If you ovulate late, the fertilized egg will take more time to implant in the uterus, pushing back when you might get a BFP.

2. Slow Rising hCG Levels: The hormone hCG (human chorionic gonadotropin) triggers a positive result on a pregnancy test. Some women might have a slower increase in hCG levels, which could delay the BFP. If you’ve tested too early, you might get a Big Fat Negative (BFN), only to test again later and receive a BFP.

3. Implantation Variance: After fertilization, the embryo travels to the uterus to implant into the uterine lining. This process can take anywhere between 6 to 12 days post ovulation (dpo). If the implantation happens closer to 12 dpo, a BFP might not appear until after a missed period.

4. Type of Pregnancy Test: Different pregnancy tests have varying sensitivities to hCG. Some tests might not detect lower levels of hCG, which could lead to a BFP showing up later than expected.

5. Menstrual Cycle Length: If you naturally have a longer menstrual cycle, a late BFP could just be in line with your cycle length. The uterine lining is shed during menstruation, marking the start of a new cycle. For women with longer cycles, ovulation, and therefore implantation, occurs later.

Remember, every woman’s body is unique, and so is her journey to a BFP. If you’ve missed a period and have received a BFP after a delay, it’s essential to consult with a healthcare provider to confirm the pregnancy and receive appropriate prenatal care.

Period or Bleeding? How to Tell the Difference

The difference between a period and implantation bleeding is often subtle. Implantation bleeding occurs when a fertilized egg implants into the uterine lining, and this may lead to some light spotting which will typically Last 1 to 2 days .

In contrast, during a period, the entire lining is shed. Most women have a period that last 5 days and  To some, this bleeding may seem like a normal period. Here are the differences explained

Normal Period:

– A normal period is a regular monthly bleeding that lasts for about 3-7 days.

– It generally involves a moderate to heavy flow of blood.

– The color of the blood may range from bright red to dark brown, depending on the duration of the flow.

– Menstrual periods occur due to shedding of the lining of the uterus, which is triggered by hormones that prepare the body for pregnancy.

– The menstrual cycle typically ranges from 21 to 35 days.

Implantation Bleeding:

– Implantation bleeding is a light bleeding that occurs about 6-12 days after fertilization when the fertilized egg implants itself into the lining of the uterus.

– It generally lasts only for 1-2 days and may occur slightly earlier or later than expected periods.

– The amount of blood is typically very light and ranges from pink to brown spotting,  to dark brown in color.

– It occurs due to the rupture of tiny blood vessels in the uterus during implantation.

– Implantation bleeding is a sign of early pregnancy, and it is followed by other pregnancy symptoms.

It can be challenging to differentiate between normal periods and implantation bleeding due to the similar symptoms of abdominal cramps, mood changes, and breast tenderness. A pregnancy test can confirm pregnancy two weeks after implantation bleeding.

Understanding Ovulation and BBT


Deciphering the Ovulation Test

An ovulation test, or OPK (Ovulation Predictor Kit), detects the surge of luteinizing hormone (LH) in your urine, indicating impending ovulation. Timed intercourse around a positive OPK can maximize your chances of achieving a BFP.

BBT and Its Relation to Ovulation

Basal Body Temperature (BBT) is your body’s temperature at rest. Charting BBT can help identify the slight rise in temperature that occurs after ovulation. This technique can assist in identifying your most fertile window.

Fertility and Trying to Conceive (TTC)


The Fertile Window

Your fertile window is the few days leading up to and including ovulation, typically spanning six days to 1 week in your menstrual cycle. Tracking your ovulation and timing intercourse during this window increases the likelihood of conception and, subsequently, a BFP.

Mistaking Implantation Bleeding for Period

If you’re trying to conceive, mistaking implantation bleeding for a period can be disappointing. But surprise! That BFP after period could be a genuine positive, not an error.

What Does Getting a BFP Mean for Those Trying to Get Pregnant?

Getting a BFP signifies the start of a new journey. It can be both an exciting and nerve-wracking time. It’s a good idea to confirm your results with a doctor with a blood test to confirm you are definitely positive and begin your prenatal care journey.

Dealing with the Unexpected: Ectopic Pregnancy and Miscarriage


Recognizing Ectopic Pregnancy Signs

An ectopic pregnancy occurs when a fertilized egg implants outside of the uterus, most commonly in the fallopian tube. If you’re experiencing severe pain or started bleeding after a BFP, seek medical attention immediately as it could be ectopic.

Understanding the Risk of Miscarriage

A miscarriage refers to the loss of a pregnancy within the first 20 weeks. Spotting or bleeding can be a sign, but not always. If you’re worried about your symptoms, don’t hesitate to consult with a healthcare provider.


Getting a BFP after a period can be confusing, especially for those actively trying to conceive. Recognizing the differences between a regular period, implantation bleeding, and early pregnancy symptoms is vital. Remember to make an appointment and consult a healthcare provider for further information or if you’re unsure about anything.


Can I get a BFP after I got my period?

Yes, it’s possible if what you thought was a period was actually implantation bleeding.

What does a BFP mean for those trying to conceive?

A BFP, or Big Fat Positive, indicates a positive pregnancy test, which can be exciting news for those trying to conceive.

Can bleeding and spotting mean I’m pregnant?

Yes, spotting can be a sign of early pregnancy and might be confused for a period.

How can I increase my chances of getting a BFP?

Tracking your menstrual cycle ( remembering your cycle day or CD), understanding your ovulation patterns, and timing intercourse during your fertile window can increase your chances of getting a BFP.

Should I consult a doc after getting a BFP?

Yes, consulting a healthcare provider or doctor after getting a BFP is a good idea to confirm your pregnancy and to understand the next steps in your prenatal care.




  1. American Pregnancy Association. (2020). Understanding Pregnancy Tests.
  2. Mayo Clinic. (2020). Symptoms of Pregnancy: What Happens First.
  3. American Pregnancy Association. (2020). Ovulation Frequently Asked Questions.
  4. Mayo Clinic. (2020). Basal Body Temperature for Natural Family Planning.
  5. American College of Obstetricians and Gynecologists. (2019). Ectopic Pregnancy.
  6. Mayo Clinic. (2020). Miscarriage.


This post is written and edited by Sandy who is a clinical pharmacist with over 20 years of experience specializing in pre-natal and post-natal care.