Can you get pregnant if ejaculation occurs inside the vagina during menstruation?

Mar 09, 2025 Source: Cainiu Health
Dr. Zhang Lu
Introduction
During menstruation, the follicles in a woman's ovaries have not developed into a dominant follicle, so ovulation does not occur. Without an egg, fertilization cannot take place even if sperm enters the vagina, making the chance of pregnancy extremely low. Having sex during menstruation may lead to genital tract infections, causing diseases such as endometritis and vaginitis, which can harm a woman's health.

Generally speaking, intravaginal ejaculation refers to ejaculation inside the body. Whether intravaginal ejaculation during menstruation can lead to pregnancy depends on specific circumstances. If a woman has regular menstrual cycles, pregnancy usually does not occur. However, if her menstrual cycles are irregular, pregnancy may be possible. Sexual intercourse during menstruation is generally not recommended. Detailed analysis is as follows:

Under normal circumstances, women typically do not ovulate during their menstrual period. The endometrium (uterine lining) is in a state of shedding, which is not conducive to fertilization or implantation of a fertilized egg. For women with regular menstrual cycles, ovulation generally occurs around the 14th day before the next menstrual period. As ovulation typically does not occur during menstruation, the chance of becoming pregnant is extremely low.

If a woman has irregular menstrual cycles, it may lead to abnormal ovulation, such as early ovulation. In such cases, if ejaculation occurs intravaginally during the menstrual period, sperm may fertilize an egg that has been released earlier. Additionally, if a woman has a long menstrual period, for instance, lasting more than seven days, and also has a short menstrual cycle, the later phase of menstruation may already be approaching the ovulation period. In such cases, intravaginal ejaculation can increase the likelihood of pregnancy.

Engaging in sexual activity during menstruation may lead to genital tract infections, causing conditions such as endometritis, endometriosis, and vaginitis, which can harm a woman's health. Therefore, to protect women's health, sexual intercourse during menstruation should be avoided.

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