Can I Get Pregnant After Unprotected Sex Right After My Period? - Obstetrics and Gynecology

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Can I get pregnant?


Doctor, I would like to ask if I had my period end on June 21, and then had unprotected intercourse the next day.
Is it possible that I could be pregnant?

Tang Tang, 20~29 year old female. Ask Date: 2015/11/09

Dr. Lin Wenbin reply Obstetrics and Gynecology


Many women mistake bleeding for menstruation; it is advisable to consult a doctor or take a pregnancy test first.

Reply Date: 2015/11/09

More Info


Yes, it is possible to get pregnant after unprotected sex right after your period, although the likelihood varies depending on several factors, including the timing of your ovulation and the length of your menstrual cycle.

To understand this better, let’s break down the menstrual cycle. A typical menstrual cycle lasts about 28 days, but it can range from 21 to 35 days in different women. Ovulation usually occurs around 14 days before the start of your next period. For example, if your period ends on June 21, and you have a 28-day cycle, you would likely ovulate around July 5. Sperm can live inside the female reproductive tract for up to five days, which means that if you have unprotected sex right after your period, there is a possibility that sperm could still be viable when you ovulate.

If your cycle is shorter, say 21 days, you might ovulate as early as June 30. In this case, having unprotected sex the day after your period ends could lead to pregnancy because the sperm could survive until ovulation. Conversely, if you have a longer cycle, you may not ovulate until later, making the chances of getting pregnant from sex right after your period lower.

Additionally, it’s important to note that some women experience irregular cycles, which can make predicting ovulation more challenging. If you have irregular periods, it may be harder to determine when you are most fertile.

If you are concerned about the possibility of pregnancy, consider taking a home pregnancy test if your next period is late. These tests are generally accurate if taken after a missed period. If you want to avoid unintended pregnancies in the future, it’s advisable to discuss contraceptive options with a healthcare provider.

In summary, while the chances of getting pregnant right after your period are generally lower, it is still possible, especially if you have a shorter menstrual cycle or irregular cycles. If you have further questions or concerns about your reproductive health, consulting with a healthcare professional is always a good idea. They can provide personalized advice based on your specific situation and health history.

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