Abdominal bloating and lumbago are not necessarily signs of early pregnancy, but may also be caused by overwork or indigestion. Diagnosis of early pregnancy requires a woman to have a history of menopause, a normal sex life, and be of childbearing age. When the menstrual period is postponed for about 10 days, blood tests for chorionic gonadotropin levels and gynecological ultrasound can confirm the diagnosis. Most women in the early stages of pregnancy will have nausea, vomiting and other early pregnancy reactions or fatigue, weakness, frequent urination, breast swelling and pain, but the most reliable basis for confirming pregnancy is to rely on the gynecological ultrasound and blood tests for chorionic gonadotropin levels are the final diagnosis of the elevated levels of purely relying on abdominal bloating and back pain to diagnose pregnancy, but also to confirm pregnancy. Simply relying on abdominal bloating and back pain to diagnose pregnancy can lead to misdiagnosis.