Aunt both menstruation, after the menstruation clean abdominal pain, may be cold, dysmenorrhea, may also be caused by pathological factors such as endometriosis, pelvic inflammatory disease. 1. Cold: women’s body resistance during menstruation is relatively reduced, if you do not pay attention to the body’s cold protection and warmth, abdominal stimulation by the cold, may lead to intestinal spasms, uterine contraction, may be caused by hidden pain in the abdomen after menstruation. 2. Dysmenorrhea: some women have dysmenorrhea themselves, and when they are late in their menstrual period or just after their menstrual period, they may experience spasmodic contraction of the uterine muscles, which may lead to hidden pain in the abdomen after their menstrual period. 3. Pathological factors: If you don’t pay attention to menstrual hygiene, bacteria invasion may cause gynecological inflammation, which may lead to postmenstrual abdominal pain. In addition, if endometriosis, chronic pelvic inflammatory disease and other diseases are not effectively controlled, the symptoms of abdominal pain after menstruation may also occur. There may be other reasons for the vague pain in the abdomen after menstruation, which may not be related to menstruation, such as enteritis, appendicitis, urinary tract infection, etc. It is recommended to go to the gynecology department of the hospital for ultrasonography to find out the cause and give treatment for the cause.