Is It Possible to Get Pregnant on Your Period?

by Jan 2, 2020

Women trying to conceive around the clock may ask themselves if it is possible to get pregnant during their period. Healthline Media suggests that sexual intercourse during your period will not harm your reproductive health. Sex during your period can be messy and less desirable because of the bleeding. Although, for many people trying to conceive, a period doesn’t stop anything but a sentence. 

Can period sex result in early pregnancy? Chances of becoming pregnant from period sex are extremely slim. This belief applies to women who have regular 21-35 day or longer cycles. If you have a significantly shorter ovulation cycle, then the chances of you getting pregnant when you have sex on your period may be slightly higher. If your cycle span less than 21 days, hence shorter, the timing of your ovulation also follows a shorter cycle. 

If you engage in intercourse at the end of your period it can be possible to conceive 4 or 5 days later during your fertile window, when your ovulation cycle is early. Because sperm can live inside the reproductive tract for up to 5 days and still fertilize an egg. Therefore, you can get pregnant, after having sex 5 days before your fertile window


Ovulation During Period

Healthline Media puts the ovulation period at about 14 days. The first of these 14 days come after the first day of bleeding, which kickstarts an average 28-day menstrual cycle. Anything more than 28-35 days is considered a long cycle. 

The menstrual cycle hormones (or period hormones) help the maturation of the eggs stored in the ovaries.  About every 28 days your ovaries release an egg that has matured, and is ready to be fertilized. This process is called ovulation. Once the egg is released, it heads to the fallopian tube and spends another 24 hours in there. Your fertile window is open for about 5 days before the egg gets released. You can track your fertile window using the Mira Fertility Starter Kit that shows your full fertile window.

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The chances of period sex leading to pregnancy depend on the timing of ovulation in your cycle. Ovulating during your period is unlikely, but still possible especially if you have short and irregular cycles.  Irregular cycles can be caused by your lifestyle, health conditions or your previous birth control method.

An extended ovulation period combined with an irregular cycle can cause an early egg release. Thus, it can increase the chances of becoming pregnant from unprotected sex during your period. Also, ovulation will most likely occur at the early stages of a shorter cycle. A short cycle combined with prolonged bleeding increases the chances of ovulating during your period.


Ideal Period Length

Vaginal bleeding is a sign of the first day of your period. The typical period can last anywhere from 2-7 days. If the signs are suggesting a possible pregnancy after period sex, see if you’re experiencing any early pregnancy symptoms.


✔️ Medically Reviewed by Banafsheh Kashani, MD, FACOG

Banafsheh Kashani, MD, FACOGBanafsheh Kashani, M.D., FACOG is a board-certified OB/GYN and specialist in reproductive endocrinology and infertility at Eden Fertility Centers, and has been treatingcouples and individuals with infertility since 2014.

Dr. Kashani has conducted extensive research in female reproduction, with a specific focus on the endometrium and implantation.

Additionally, Dr. Kashani has authored papers in the areas of fertility preservation, and fertility in women with PCOS and Turners syndrome. She also was part of a large SART-CORS study evaluating the trend in frozen embryo transfers and success rates.

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