What's the harm in sleeping with your aunt?

During menstruation, endometrial exfoliation, alkaline menstrual blood neutralizes the vaginal acid-base environment, so that the natural barrier function in the vagina is weakened, if you do not pay attention to menstrual hygiene, even during menstruation, bacteria will be brought into the reproductive tract, and menstrual blood is a good medium for bacteria and other microorganisms, easily causing bacterial breeding, causing endometrial infection, even involving fallopian tubes and pelvic organs, resulting in female infertility. In addition, menstrual coitus, sperm in the endometrial damage and blood cells meet, can induce the production of anti-sperm antibodies, resulting in female immune infertility. Therefore, menstrual period is prohibited sexual life.