Can You Get Pregnant from Intercourse During Your Period? - Obstetrics and Gynecology

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Is it possible to get pregnant if there is sexual intercourse with ejaculation inside during menstruation? Please help answer this, thank you.

Hua Hua, 10~19 year old female. Ask Date: 2004/09/28

Dr. Zhuang Zhijian reply Obstetrics and Gynecology


Having sexual intercourse during menstruation typically does not result in pregnancy.

Reply Date: 2004/09/28

More Info


Yes, it is possible to get pregnant from intercourse during your period, although the likelihood is generally lower compared to other times in your menstrual cycle. To understand this better, let's break down the factors involved.

1. Menstrual Cycle Overview: The average menstrual cycle lasts about 28 days, but it can vary from person to person, typically ranging from 21 to 35 days. Ovulation, which is when an egg is released from the ovary, usually occurs around the midpoint of the cycle, approximately 14 days before the start of the next period. Sperm can live inside a woman's reproductive tract for up to five days, which means that if you have unprotected intercourse during your period, and you ovulate shortly after your period ends, there is a possibility that the sperm could still be viable when the egg is released.

2. Timing of Ovulation: For women with shorter cycles (e.g., 21 days), ovulation may occur shortly after the period ends. If intercourse occurs during the last days of menstruation, and ovulation happens soon after, there is a chance for sperm to fertilize the egg. This is particularly true if the menstrual bleeding is light and the woman has a shorter cycle.

3. Variability in Cycles: Not all women have regular cycles, and factors such as stress, illness, or hormonal imbalances can affect ovulation timing. This unpredictability can increase the chances of pregnancy if intercourse occurs during menstruation.

4. Contraceptive Methods: If you are trying to avoid pregnancy, it is essential to use effective contraception consistently, regardless of the timing in your cycle. Relying solely on the belief that you cannot get pregnant during your period can lead to unintended pregnancies.

5. Understanding Fertility: If you are trying to conceive, knowing your cycle and tracking ovulation can be beneficial. There are various methods to track ovulation, including calendar methods, basal body temperature monitoring, and ovulation predictor kits.

In summary, while the chances of getting pregnant from intercourse during your period are lower, it is not impossible, especially if you have a shorter cycle or irregular ovulation. If you have concerns about pregnancy or contraception, it is advisable to consult with a healthcare provider for personalized advice and options.

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