35 weeks of vague pain in the stomach to consider may be premature labor, false contractions, intestinal colic, appendicitis caused. 1. Preterm labor: generally speaking, 35 weeks of pregnancy belongs to the late stage of pregnancy, if the frequent abdominal pain, can not be ruled out that there is a precursor to labor, is caused by contractions. 2. False contractions: If the pain is irregular and not frequent, then false contractions cannot be ruled out. 3. Colic: If the pregnant woman has an improper diet, then there is a possibility of intestinal smooth muscle spasm, and it is possible to produce abdominal pain. 4. Appendicitis: If a pregnant woman has pain in the lower right abdomen, appendicitis is not excluded. Pregnant women, regardless of the cause of abdominal pain, as long as the symptoms do not get better, must promptly consult the doctor, under the guidance of the physician to take appropriate treatment.