Is Pregnancy Likely After Unprotected Sex with PCOS?

Is it easy to get pregnant in this situation?

Your girlfriend has polycystic ovary syndrome (PCOS).
Her last menstrual period was on August 19, and her cycles have been regular for the past three months, approximately 29 to 30 days.
You had sexual intercourse on September 15, but the condom broke, and semen was deposited inside.
After checking, you found that it was a safe period, so she did not take emergency contraception.
Today is September 20, and her period has not arrived yet.
What is the likelihood of pregnancy in this situation, and should she see a gynecologist?

A Sir Lin, 10~19 year old female. Ask Date: 2022/09/20

Dr. Cao Guotao reply Obstetrics and Gynecology

Hello, wait for another week.
If it still doesn't come, I recommend seeing a gynecologist.
Wishing you good health.

Reply Date: 2022/09/20

More Info

When considering the likelihood of pregnancy after unprotected sex, especially in the context of Polycystic Ovary Syndrome (PCOS), several factors come into play. PCOS can affect ovulation and menstrual cycles, making it a bit more complex to predict pregnancy outcomes. However, if your girlfriend's menstrual cycles have been regular for the past three months, this indicates that she may be ovulating normally during this time.

In your case, you mentioned that the last menstrual period started on August 19 and that you had unprotected sex on September 15, which is approximately 27 days after her last period. Given that her cycles are around 29-30 days, it is likely that she was approaching ovulation around that time, as ovulation typically occurs about 14 days before the start of the next period. If ovulation occurred around September 15, there is a possibility that sperm could fertilize an egg, leading to pregnancy.

The fact that you did not use a condom due to it breaking and that semen was deposited inside her increases the risk of pregnancy. While you mentioned that you believed it was a "safe period," it is important to note that the concept of "safe periods" can be unreliable, especially for women with PCOS, as their ovulation can be unpredictable.

As for the absence of menstruation by September 20, it is still relatively early to determine if she is pregnant. Many women may not experience a missed period until a few days after their expected date. If she does not get her period soon, it would be advisable for her to take a home pregnancy test. These tests are generally accurate when taken after a missed period, as they measure the hormone hCG (human chorionic gonadotropin) in urine, which is produced after a fertilized egg implants in the uterus.

If the home pregnancy test is positive, it would be wise to schedule an appointment with a healthcare provider to confirm the pregnancy through blood tests and possibly an ultrasound. If the test is negative and her period does not arrive, it would still be a good idea to consult a gynecologist, as irregularities in menstrual cycles can occur for various reasons, including hormonal imbalances associated with PCOS.

In summary, given the circumstances of unprotected sex during a potentially fertile window, there is a possibility of pregnancy. Monitoring her menstrual cycle and taking a pregnancy test if her period does not arrive would be the next best steps. Consulting with a healthcare provider can provide further guidance and support, especially considering her PCOS diagnosis, which may require additional attention regarding reproductive health.

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