Most women do not feel anything obvious in the first few days of pregnancy. A small number of 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. 1. Menopause is the earliest symptom of pregnancy. For women of childbearing age who have normal sex life, pregnancy should be highly suspected once the menstrual period is regular. 2, women after pregnancy due to changes in hormone levels in the body 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 will disappear on its own; due to different personal physical quality, 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 adjustment, such as severe pregnancy vomiting. The nausea and vomiting reactions are so severe that it is impossible to eat and drink, and electrolytes (mainly K ions) will be disturbed and ketone bodies will increase, resulting in miscarriage or ketoacidosis in severe cases. 3.In the first pregnancy, the enlarged uterus presses the bladder in front of the pelvic cavity leading to frequent urination. As the pregnancy lengthens and the enlarged uterus gradually enters the abdominal cavity, the symptoms of frequent urination gradually disappear. 4.Pregnant women can feel their own breast swelling and pain, breast volume gradually becomes bigger, nipple areola increases, coloring deepens, and Montserrat nodes (dark brown nodules around the areola) can appear. Clinically, because the symptoms of new pregnancy appeal are usually not obvious, doctors mainly rely on auxiliary investigations to clarify the site of pregnancy and the time of pregnancy: such as quantitative determination of blood HCG, vaginal ultrasound examination, etc.