It is a kind of physical abdominal pain, which is a normal physiological phenomenon in early pregnancy, and may be induced by the early embryonic implantation, uterine ligament pulling and hormone level changes in the body, which lead to accelerated metabolism in the body; it is often manifested as short time, both sides of the lower abdomen, aggravated by exertion, and can be relieved after lying down and resting; at this time, attention should be paid to maintenance, preventing At this time, we should pay attention to maintenance, prevent from getting cold, eat less sour and spicy food, and apply hot compresses locally, which can be effectively adjusted. If the vague pain is prolonged and gradually worsens, or if it is accompanied by a little vaginal bleeding, the possibility of pre-eclampsia or ectopic pregnancy cannot be ruled out, and it is necessary to immediately go to the hospital to recheck the blood HCG (human chorionic gonadotropin) and vaginal ultrasound for clarification. If the increase in blood HCG is unsatisfactory, the ultrasound indicates a normal intrauterine gestational sac and a dark area of fluid is detected in the uterus, consider preterm abortion due to luteal insufficiency. If the blood HCG value is significantly decreased and the ultrasound suggests intrauterine void, it suggests a possible biochemical pregnancy (the sperm met the egg to form a fertilized egg, but it did not settle). For early pregnancy without previous definite intrauterine pregnancy (e.g. HCG positive, vaginal ultrasound does not see intrauterine fetal sac and the doctor recommends a repeat test in a week; or if the pregnancy is detected by self pregnancy test), the presence of small stomach pain needs to alert the possibility of ectopic pregnancy, such as tubal pregnancy, if the HCG value rises and ultrasound sees a mass in one of the fallopian tubes with no fetal sac in the uterus, ectopic pregnancy is highly suspected and requires hospitalization for conservative or surgical treatment. Abdominal pain in ectopic pregnancy is often manifested as prolonged, episodes in one side of the lower abdomen with gradual intensity of pain and even fainting. If you test for pregnancy at home by yourself with urine test paper and do not go to the hospital, you cannot exclude the possibility of false pregnancy, and the hidden pain in the stomach does not exclude gastroenteritis, pelvic inflammatory disease, appendicitis, etc.