Stomach pain in late pregnancy may be caused by physiological factors, acute gastroenteritis, gastric ulcer and other reasons. 1. Physiological factors: In late pregnancy, with the development of the fetus, the uterus gradually increases in size, and the bottom of the uterus will press upward on the stomach, resulting in a decrease in stomach capacity. If you eat too much during this period, you will experience stomach pain, acid reflux, nausea, vomiting and other uncomfortable symptoms, and it is recommended that pregnant women in the late stages of pregnancy eat small meals to slowly adapt to the physiological changes in the stomach. 2. Acute gastroenteritis: If pregnant women eat spoiled or unclean food, it will easily lead to acute gastroenteritis, which will lead to stomach pain, vomiting followed by diarrhea, fever and other symptoms. 3. Gastric ulcer: If a pregnant woman suffers from gastric ulcer, it will also lead to symptoms of stomach pain in late pregnancy. And the pain often occurs within half an hour to an hour after meals, manifested as burning pain in the stomach. There are many reasons for stomach pain in late pregnancy, and it is recommended to consult a doctor in time to get a clear diagnosis and symptomatic treatment.