The woman’s waist will also hurt when she has pain in her belly, which is a normal physiological reaction. The pain in the abdomen after menstruation or childbirth is caused by the body’s secretion of prostaglandins that cause uterine contraction. Prostaglandins not only contract blood vessels and smooth muscle of the uterus, but also are widely distributed in the nervous system leading to back pain, and according to individual differences, each person’s sensitivity to pain is also different. The actual fact is that you can use a hot compress or a baby warmer to keep you warm, or you can use your hands to gently relieve your abdomen, or you can drink some brown sugar water, motherwort, etc. to relieve the pain. If you exclude frequent abdominal pain during menstruation and childbirth, it is recommended to go to the hospital for timely examination to see if there are other diseases causing pain, such as urinary tract infections, etc., which need to be treated for the cause.