If a woman has symptoms of abdominal pain and lumbago after having sex, consider whether she did not pay attention to hygiene during sex, causing bacteria and other substances to enter the uterus and cause pelvic inflammatory disease. If sex is too frequent and the man exerts himself too much and is impatient during the process, it can also lead to cramps in the abdomen, which will recover after a few days of rest. Pay attention to vaginal hygiene, clean the vaginal secretions and take antibiotics for relief, such as cephalosporins. If the symptoms persist or are not relieved, it is recommended to go to the hospital in time to determine whether the woman has cervicitis or pelvic inflammatory disease through internal gynecological examination, routine white belt and cervical secretion culture.