I Didn’t Know I Was Pregnant: Understanding Monthly Periods During Pregnancy

I Didn't Know I Was Pregnant: Understanding Monthly Periods During Pregnancy
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For many women, a regular menstrual cycle is a good indication of their reproductive health. However, what happens when a woman becomes pregnant but still gets her monthly period? In some cases, a woman might not even realize that she is pregnant until later on in the pregnancy. This phenomenon, known as “I didn’t know I was pregnant,” may seem surprising, but it is more common than you may think.

Understanding how monthly periods and pregnancy can intersect is essential for any woman of reproductive age. This article will explore the reasons why women can still have a period during pregnancy, the potential risks associated with this phenomenon, and how to distinguish between regular periods and other types of bleeding during pregnancy.

Disclaimer: It is important to note that if you suspect that you may be pregnant, it is always best to consult with a healthcare professional for accurate diagnosis and care. This article is not intended to replace medical advice or serve as a substitute for professional healthcare.

Common Misunderstandings About Pregnancy

There are plenty of misconceptions about pregnancy. Here are a few common misunderstandings:

1. Morning sickness only happens in the morning

Despite its name, morning sickness can occur at any time of the day or night. It typically starts early in the pregnancy and can last for several weeks or even months.

2. Pregnant women should eat for two

While it is important to eat a healthy and balanced diet during pregnancy, the idea that you need to eat for two is a myth. You only need to consume a few extra calories per day to support your growing baby.

3. You should avoid all seafood

Some types of fish, such as swordfish and shark, should be avoided during pregnancy due to their high mercury content. However, many types of seafood, such as salmon and shrimp, are safe and even beneficial for pregnant women.

4. You can’t exercise during pregnancy

Exercise is actually good for both you and your baby during pregnancy. Regular physical activity can help control weight gain, reduce the risk of gestational diabetes, and improve your mental health.

5. You can predict your due date with certainty

While doctors can estimate your due date based on your last menstrual period, it is not an exact science. Only about 5% of women give birth on their due date, and babies can be born up to two weeks early or two weeks late.

Myth Fact
You shouldn’t drink any caffeine during pregnancy Although excessive caffeine can be harmful during pregnancy, moderate consumption (less than 200 mg per day) is generally considered safe.
Pregnant women shouldn’t take baths Bathing is safe during pregnancy, as long as the water temperature is not too hot. Hot tubs and saunas should be avoided, however.
You can’t dye your hair during pregnancy While some hair dyes contain chemicals that may be harmful during pregnancy, many are safe to use. It’s best to talk to your stylist or doctor before using any hair dye.

Real-Life Stories of “I Didn’t Know I Was Pregnant”

Many women have shared their shocking and unexpected experiences of discovering they were pregnant after months, or even the entire duration, of their pregnancy. Some of these stories include:

  • The Fitness Trainer: A 32-year-old fitness trainer went to the hospital with what she thought was a kidney stone, only to find out she was actually in labor and gave birth to a healthy baby boy.
  • The College Student: A college student who experienced irregular periods throughout her life didn’t realize she was pregnant until she gave birth in her dorm room to a baby girl.
  • The Marathon Runner: A 30-year-old marathon runner who continued to run up until the day she gave birth was shocked to find out she was pregnant when she went to the hospital with stomach pain.
  • The Woman with PCOS: A woman with polycystic ovary syndrome (PCOS), which can cause irregular periods, didn’t know she was pregnant until she was rushed to the hospital with severe abdominal pain and gave birth to a baby girl.

These real-life stories demonstrate that it is possible for a woman to be pregnant without knowing it, and highlight the importance of being aware of the signs and symptoms of pregnancy, even if you are not actively trying to conceive.

Final Thoughts

To sum up, monthly periods during pregnancy are a rare phenomenon that can occur in some cases. However, it is important to remember that having a period does not necessarily mean that a person is not pregnant, as bleeding during pregnancy can stem from other causes.

If you suspect that you may be pregnant, it is always best to take a pregnancy test and consult with your healthcare provider. It is also important to maintain a healthy lifestyle and attend all recommended prenatal appointments to ensure the health and well-being of both the mother and the baby.

Overall, understanding the changes that occur in the body during pregnancy can help individuals make informed decisions and take the necessary steps to ensure a healthy and successful pregnancy.

Questions & Answers:

Is it possible to have a period every month and still not know that you are pregnant?

Yes, it is possible for some women to still have a regular menstrual cycle during pregnancy. This is known as “pregnancy bleeding” and happens when the fertilized egg implants in the uterine lining. Women may mistake this for a period and not realize they are pregnant until further along in the pregnancy.

What are some signs that you may be pregnant even if you are still having a regular period?

Some signs of pregnancy include fatigue, breast tenderness, frequent urination, nausea, and food aversions. However, these symptoms can also be attributed to other conditions, so it is important to take a pregnancy test if you suspect you may be pregnant.

How common is it for women to not know they are pregnant until late in the pregnancy?

It is estimated that approximately 1 in 500 women do not realize they are pregnant until they are at least 20 weeks along in the pregnancy. This can be due to a variety of reasons, including irregular periods, not experiencing pregnancy symptoms, or just not considering the possibility of pregnancy.



Wow, this article was shocking. I had no idea that a woman could have a period every month and not realize she is pregnant. It really makes me wonder how common this is and how women can stay so unaware of their own bodies.


Where do I even begin? This article was a complete shock to me. I had no idea that it was possible to be pregnant and still have monthly periods. As someone who has always relied on a missed period as a surefire sign of pregnancy, it’s unsettling to know that this isn’t always the case. However, I’m grateful for the information provided in the article. It’s definitely something that I will keep in mind for the future. That being said, I do have some concerns. The article briefly mentions that continuing to have periods during pregnancy is “not uncommon,” but it doesn’t provide any information on the medical implications. Is it safe for the mother and the baby? Could it potentially harm the development of the fetus? I think including more information on the medical side of things would make the article even more informative. In addition, I found the personal stories from women who experienced this phenomenon to be incredibly compelling. It’s powerful to hear about their experiences and how they navigated the situation. However, I would have liked to see more diversity among the stories. It felt like the majority of the stories were from white, middle-class women, and I think it’s important to represent a wider range of experiences. Overall, this article was thought-provoking and informative. However, I think delving deeper into the medical implications and including more diverse perspectives would have made it even stronger.


As someone who is currently trying to conceive, this article provided some eye-opening information. I had always thought that a missed period was a surefire sign of pregnancy, but now I know that’s not always the case. It’s comforting to know that there are other signs to look out for, like fatigue and breast changes. However, I do wish the article provided more information on the medical implications of continuing to have periods during pregnancy. Is it safe? Can it affect the baby? Nevertheless, it’s definitely a fascinating topic that I’ll be researching further.


Wow, this article really took me by surprise! I had no idea that some women can continue to have periods throughout their entire pregnancy. It’s definitely something to keep in mind for the future!


This article was eye-opening for me. As a man, I had very little knowledge about the intricacies of women’s health, and I was completely unaware that a woman could have a period every month and still not know she is pregnant. I found it interesting that the body could continue to go through such a regular cycle and still be hiding a growing baby. The personal stories shared in the article were particularly compelling and made me realize the importance of staying in tune with our own bodies.


Reading this article was a rollercoaster of emotions for me. As a man, I have always been ignorant about the complexity of women’s health, but this article has left me stunned. To think that a woman could have a period every single month and not realize she is pregnant is mind-boggling. The fact that the body could continue to go through such a regular cycle while hiding a growing baby is just incredible. The personal stories shared in the article were particularly impactful for me. It was hard to imagine a woman going so long without realizing she was pregnant, yet it seems to happen more often than we think. The story of the woman who continued to take pregnancy tests and never got a positive result was particularly heart-wrenching. It’s clear from this article that women need to be more vigilant about their own bodies and pay closer attention to potential signs of pregnancy. It’s also important for men like myself to become more educated and informed about women’s health so that we can offer support and understanding to the women in our lives. Overall, I found this article incredibly enlightening and thought-provoking, and I would definitely recommend it to others.