There will not be stomach pain during pregnancy, if stomach pain occurs during pregnancy, caused by more reasons, as follows: First, if the intestinal tract dysfunction, there will be constipation or diarrhea, may also cause abdominal pain. Secondly, the fertilized egg may stimulate the uterus, even the lining of the uterus, which may cause a small amount of abdominal pain, usually in about 2 days will be improved. If the abdominal pain lasts for a longer period of time, it is recommended to go to the hospital for blood tests of 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, according to the situation of prescribing birth control drugs for preventive birth control, so as not to cause bleeding, or even abdominal pain, resulting in the possibility of preterm miscarriage.