The first thing to consider is whether the sudden abdominal pain is caused by gynecological diseases or other medical or surgical causes. The following reasons can be considered for abdominal pain: 1. Ovarian cyst torsion: If there is a previous adnexal cyst and sudden onset of lower abdominal pain that persists without relief, consider the possibility of ovarian cyst torsion. 2. Ectopic pregnancy: If it is early pregnancy and sudden pain in the abdomen accompanied by vaginal bleeding, consider the possibility of ectopic pregnancy more likely. 3. Dysmenorrhea: If the pain occurs during menstruation, it is dysmenorrhea, which is more common. Most of them are primary dysmenorrhea during puberty, which can be cured by itself; while postmenstrual episodes of dysmenorrhea are mostly caused by some kind of disease and should be examined in hospital. 4. rupture of the corpus luteum of the ovary A sudden increase in intra-abdominal pressure during external force, forceful coughing or defecation can prompt the rupture of the mature corpus luteum. 5. Acute appendicitis. If the pain is in the right lower abdomen, the possibility of acute appendicitis is higher. Metastatic right lower abdominal pain and appendicular point pressure pain, rebound pain are its common clinical manifestations, often accompanied by nausea and vomiting. 6, intestinal cramps. If the pain in the small abdomen has a bowel movement, or the pain improves or disappears after a bowel movement, it may be intestinal spasm. If suddenly small abdominal pain, you need to immediately go to the hospital for examination, doctor diagnosis to find the cause of symptomatic treatment, so as not to delay the disease.