Tummy pain does not exist during pregnancy. If tummy pain occurs during pregnancy, there are more causes, as follows: i. If the intestinal tract is disordered, there will be constipation or diarrhea, which may also cause abdominal pain. Second, when the fertilized egg is laid, it may stimulate the uterus and even the endometrium of the uterus, which may cause a small amount of abdominal pain, which usually gets better in about 2 days. If the abdominal pain lasts for a long time, it is recommended to go to the hospital to have blood tests for progesterone and human chorionic gonadotropin to rule out any abnormalities. At the same time, according to the number of weeks of pregnancy, black and white ultrasound monitoring can also be performed, according to the situation, the prescription of birth control drugs for preventive birth control, to avoid bleeding, or even abdominal pain, resulting in the possibility of preterm abortion.