Women with sudden stomach pain should be concerned about acute appendicitis, or ureteral stones, as well as the possibility of ectopic pregnancy causing hemorrhage. First of all, we should determine whether there is a history of menopause and a history of sexual life, if it is menopause for more than one month, then it may be pregnancy. If you are pregnant and have sudden stomach pain, the possibility of ectopic pregnancy rupture is very high and you need to come to the hospital for examination in time. Blood tests may reveal a decrease in red blood cells and hemoglobin, and ultrasound of the abdomen may reveal an accumulation of blood in the abdominal cavity, as well as the extraction of non-coagulated blood during a diagnostic abdominal puncture. In case of ruptured bleeding from an ectopic pregnancy, emergency surgery is required. In the case of appendicitis, the pain is usually in the right lower abdomen or in the pelvic cavity, and a blood test may reveal elevated white blood cells. Ultrasound of the abdomen can reveal swelling of the appendix and oozing around the appendix, and surgery is usually needed after the diagnosis is clear.