Pregnancy Risks After Menstruation: Your Questions Answered - Obstetrics and Gynecology

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Having unprotected intercourse on the second day of menstruation generally carries a lower risk of pregnancy, but it is not impossible. Sperm can survive in the female reproductive tract for several days, and if ovulation occurs shortly after menstruation, there is a chance of fertilization


Hello doctor, my menstrual cycle has been quite regular, arriving on the 26th of each month until February.
In March, it came on the 30th, and in April, it returned to the 27th.
However, my cycle has been a bit irregular in the past two months.
This month, my period ended on the 5th, and I had sexual intercourse with my boyfriend.
The first time we used a condom, and I wiped myself with wet wipes afterward.
The second time, we did not use a condom and he ejaculated externally.
According to the app, my ovulation day is on the 15th, and I started my fertile window on the 9th.
Recently, I've been experiencing lower abdominal pain on one side and increased discharge (I usually have one-sided lower abdominal pain and increased discharge during ovulation).
I would like to know what the chances of pregnancy are in this situation.
Are the days right after my period considered safe days?

Wu, 10~19 year old female. Ask Date: 2024/05/07

Dr. Cao Guotao reply Obstetrics and Gynecology


Hello, it should be the safe period, so you are unlikely to get pregnant.
Wishing you good health.

Reply Date: 2024/05/07

More Info


Understanding the risks of pregnancy after menstruation is crucial for anyone who is sexually active and looking to manage their reproductive health. Based on your description, it seems you have a few concerns regarding the timing of your menstrual cycle, the nature of your sexual activity, and the potential for pregnancy.

Firstly, it's important to understand the menstrual cycle. A typical cycle lasts about 28 days, but it can vary from person to person, and even from month to month. You mentioned that your cycle has been somewhat irregular lately, which can happen due to various factors such as stress, hormonal changes, or other health issues. The first day of your period is considered Day 1 of your cycle, and ovulation typically occurs around 14 days before your next period starts. This means that if your cycle is around 26-30 days, ovulation could occur anywhere from Day 12 to Day 16 of your cycle.

In your case, you had sexual intercourse shortly after your period ended, and while you used protection during the first encounter, the second encounter involved withdrawal (pulling out). It's important to note that while using a condom significantly reduces the risk of pregnancy, the withdrawal method is not as reliable. Pre-ejaculate fluid can contain sperm, which means that even if ejaculation occurs outside the vagina, there is still a risk of pregnancy.

Regarding your question about the "safe period," it is a common misconception that the days immediately following menstruation are completely safe for unprotected intercourse. While the likelihood of becoming pregnant is lower immediately after your period, it is not zero, especially if you have a shorter cycle or if you ovulate earlier than expected. Sperm can live inside the female reproductive tract for up to five days, so if you have unprotected sex close to your ovulation window, there is a possibility that sperm could still be viable when you ovulate.

You also mentioned experiencing lower abdominal pain and increased discharge, which are common symptoms associated with ovulation. This pain, often referred to as "mittelschmerz," can occur when the ovary releases an egg. Increased cervical mucus is also a sign of approaching ovulation, as the body prepares for potential fertilization.

Given these factors, it is indeed possible that you could become pregnant from the sexual activity described, especially if it coincided with your ovulation period. If you are concerned about the possibility of pregnancy, you may want to consider taking a home pregnancy test if your period is late or if you experience any early pregnancy symptoms.

In conclusion, while the days immediately following menstruation may have a lower risk of pregnancy, they are not entirely safe, especially if you are close to your ovulation period. If you are actively trying to avoid pregnancy, it is advisable to use reliable contraception consistently. If you have further concerns or experience any unusual symptoms, consulting with a healthcare provider would be beneficial for personalized advice and guidance.

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