Tummy ache is usually not a sign of pregnancy, but may be caused by digestive tract disorders, gynecological disorders, etc. Some women may experience soreness in the lower back and distension in the abdomen in the early stage of pregnancy, but this should not be considered as a sign of pregnancy. Usually pregnancy can be diagnosed based on menstrual cycle, blood HCG test, blood progesterone test, etc. Gastrointestinal diseases such as acute gastroenteritis, dyspepsia, cholecystitis, appendicitis; gynecological diseases such as pelvic inflammatory disease and adnexitis can cause the manifestation of abdominal pain. It is usually necessary to clarify the cause of abdominal pain after examination, combined with other symptoms of the patient, and carry out targeted treatment. If a woman has abdominal pain during pregnancy preparation, she needs to consult a doctor in time, combine ultrasound examination and laboratory tests to make a clear diagnosis and carry out treatment, and usually maintain a regular life, eat in moderation, and avoid bad habits such as staying up late and overeating.