A vague pain in the lower abdomen found in a new pregnancy may be physiological or pathological. In early pregnancy, when the fertilized egg is successfully implanted, the uterus has some rejection of the gestational sac, so vague pain can occur. Also, after pregnancy, abdominal pain can occur due to the enlargement of the uterus and stretching of the uterine ligaments. However, if the pain in the abdomen is accompanied by a small amount of vaginal bleeding, you need to go to the hospital promptly to rule out a preterm miscarriage or ectopic pregnancy. If the test is preterm miscarriage, you can choose medication for fetal preservation treatment under the guidance of your doctor. During the period of birth control, you must pay attention to rest and not to exercise strenuously. If the test is ectopic pregnancy, conservative treatment with embryo-killing drugs and regular blood tests for human chorionic gonadotropin can be taken first. If conservative treatment fails, laparoscopic surgery can be performed.