Bleeding after having sex during menstruation may be caused by the incomplete recovery of the endometrium's defense function. During intercourse, the male may introduce bacteria into the female's body, damaging the endometrium and leading to rebleeding or menstrual regression. Additionally, the uterus is not fully recovered immediately after menstruation, and early intercourse can easily cause uterine congestion and vaginal bleeding. Therefore, it is recommended to avoid intercourse after menstruation.
1. The endometrium loses its protective ability shortly after menstruation. During this time, sexual intercourse can introduce bacteria from the male's genitalia, infecting the endometrium and causing pelvic inflammatory disease, causing discomfort for the female. Some women may experience menstrual regression or bleeding a few days after menstruation ends, and in such cases, it is essential to avoid intercourse.
2. During menstruation, the female's endometrium flows out of the uterus. If intercourse occurs immediately after menstruation, during the peak of female arousal, the uterus contracts, and the fragmented endometrium already shed in the uterine cavity can enter the fallopian tubes under uterine contraction pressure. It can then travel along the fallopian tubes into the abdominal cavity and pelvic cavity. Wherever it lands, it can grow and cause endometriosis.
3. The uterus is not fully recovered immediately after menstruation and takes approximately one week to do so. Early intercourse can cause uterine congestion, leading to rebleeding of the endometrial lining and vaginal bleeding. The environment of vaginal bleeding makes it difficult for the body to resist the invasion of foreign bacteria, increasing the risk of gynecological diseases such as endometrial inflammation for women.
4. Within seven days after menstruation, it is recommended to limit sexual activity for the health of female friends. From a safety perspective, it is best to wait at least a week after menstruation before having intercourse. Those who do not plan to become pregnant can avoid intercourse during the fertile period.
