Most women have no obvious reaction in the first few days of pregnancy, but depending on their age, physical fitness and work pressure, some women may experience physiological discomfort such as swelling and soreness of the waist and abdomen, easy to feel tired and some early pregnancy-related symptoms, such as menopause, early pregnancy reaction, frequent urination, breast changes, etc. Menopause is the earliest symptom of early pregnancy. For women of childbearing age who have normal sex life, pregnancy should be highly suspected once menstruation reaches 10 days or more (10 days of menopause). 2, women after pregnancy due to changes in the body hormone levels can appear early pregnancy reaction, such as cold, dizziness, limb weakness, drowsiness, nausea and vomiting, hate greasy, like to eat sour food, etc., mostly in about 6 weeks after menopause, about 12 weeks disappear on their own; because of the different physical qualities of individuals, the reaction can be light or heavy, the light ones can be relieved after paying attention to diet and rest; the heavy ones need to go to the hospital for rehydration and conditioning, such as severe pregnancy vomiting. The nausea and vomiting reactions are so severe that it leads to inability to eat and water, disruption of electrolytes (mainly K ions) in the body, increase of ketone bodies, and miscarriage or maternal ketoacidosis in severe cases. In the early stage of pregnancy, the enlarged uterus presses on the bladder in front of the pelvic cavity, causing the pregnant mother to urinate frequently. As the pregnancy lengthens, the enlarged uterus gradually enters the abdominal cavity and the symptoms of frequent urination gradually disappear. 4. Pregnant women may feel breast swelling and pain, breast volume gradually becomes larger, nipple areola enlarges, coloring deepens, Montserrat nodules (dark brown nodules around areola) may appear, gynecological examination sexual duplex examination may appear black plus sign (uterine isthmus is extremely soft, feeling that the cervix is not connected with the uterine body). Clinically, as the above symptoms are not obvious in new pregnancies, doctors mainly rely on auxiliary investigations to clarify pregnancy and the time of pregnancy: such as qualitative and quantitative determination of blood HCG, vaginal ultrasound view, etc.