Can a Woman Become Pregnant During Her Menstrual Cycle?

Menstruation is a normal physiological phenomenon that occurs monthly in every normal female, and it is mainly caused by the periodic shedding of the uterine lining. There are also many things to pay attention to during menstruation, such as keeping the abdomen warm, avoiding eating too cold and stimulating foods, and trying not to drink cold water or take cold showers. However, will having sex during menstruation lead to pregnancy?

Generally speaking, the chance of pregnancy during menstruation is relatively small. This is because during sexual activity during menstruation, the uterus contracts due to sexual arousal, which can squeeze fragments of the uterine lining into the pelvic cavity. Since sperm can encounter damaged uterine lining and spilled blood cells, or even enter the bloodstream, this can trigger the production of anti-sperm antibodies, which can lead to infertility. Therefore, it is not recommended to have sex during menstruation.

1. Excessive Menstrual Blood and Prolonged Menstruation: Sexual arousal and the insertion of the penis can cause congestion in the female reproductive organs, leading to increased menstrual flow and prolonged menstruation.

2. Easy Infection of the Reproductive System: Sexual activity during menstruation can easily introduce bacteria from the external genitalia and perineum into the vagina and cervix, and even into the uterus. These bacteria can grow and multiply in the presence of blood, leading to inflammation called endometritis, which can cause fever and lower abdominal pain.

3. Easy to Cause Endometrial Heterotopia: During sexual activity during menstruation, when the female reaches a state of arousal, the uterus contracts. At this time, fragments of the uterine lining that have already shed can be squeezed into the fallopian tubes due to the pressure of uterine contraction. These fragments can then enter the abdominal cavity and pelvic cavity through the fallopian tubes. Wherever they land, they can grow and cause endometrial heterotopia, which can disrupt the normal development and growth of eggs and affect ovulation, ultimately leading to infertility.