Because menstrual sexual life is extremely harmful, mainly in:

First, during menstrual sexual intercourse, male genitals may bring bacteria into the vagina. Menstrual blood is a good culture base for bacteria and other microorganisms. Bacteria are easy to breed, urethritis spreads along many tiny wounds and ruptured small blood vessels in endometrium, infects endometrium, hysteromyoma, and even involves fallopian tubes and pelvic organs, which brings unnecessary trouble to the woman.

The second is the same room during menstruation. Because the uterus contracts during sexual impulse, endometrial debris can also squeeze into the pelvic cavity, causing endometriosis and infertility.

Thirdly, the same is true in menstrual period. Because sperm meets with spilled blood cells in the damaged part of endometrium, it can induce the production of anti-sperm antibodies and lead to immune infertility.

It can be seen that menstrual sex not only threatens women's health, but also threatens the whole family, resulting in the baby not coming. Having sex during menstruation, a temporary passion will actually make a woman infertile, and the price is huge. Therefore, men should exercise restraint, and women should also help their husbands to exercise restraint for their own health and babies, and must avoid having sex during menstruation.

I hope it helps you! !