The reasons for wanting to poop when having menstrual cramps are very many: First, some women have a posterior uterus, which can have an oppressive effect on the intestines, and when menstruation comes, there may be symptoms of pooping. Second, chronic pelvic inflammatory disease, can cause pelvic congestion as well as the phenomenon of scar adhesion, when menstruation, the pelvic cavity will have more obvious congestion, so there is often a feeling of abdominal drop, lumbosacral pain, and also have the symptom of pooping. Third, pelvic stasis, pelvic stasis people usually have nerve dysfunction, the lower abdomen has a feeling of swelling, pain, and the anus will also have a feeling of swelling, menstruation, often want to poop the situation. Fourth, dysmenorrhea, women menstrual blood prostaglandin content is relatively high, can enter the blood circulation, causing the gastrointestinal tract, urinary tract and blood vessels and other places of the smooth muscle contraction, it is possible to poop the situation exists.