It is not possible to get pregnant during menstruation because there are no mature follicles to expel during this period and you cannot get pregnant during intercourse. However, having intercourse during menstruation is very harmful to a woman’s body. If you have intercourse during menstruation, because the opening of the uterus is open, it is easy to cause upstream infection of inflammation, resulting in endometritis, tubitis, pelvic inflammatory disease, etc., which can cause abdominal pain. In addition, women who have intercourse during menstruation are also prone to menstrual blood reflux, which can easily cause endometriosis and cause dysmenorrhea. Therefore, women should strictly prohibit intercourse during menstruation, and also pay attention to keeping the vulva clean and hygienic during menstruation, washing the vulva regularly and changing the sanitary pads regularly. Pay attention to keep warm during menstruation, forbid eating cold, spicy and stimulating food, and strengthen nutrition during menstruation to enhance body resistance.