Pregnant women’s stomach pain may be caused by physiological reasons, abdominal cold, pre-miscarriage, ectopic pregnancy and so on. 1. Physiological reasons: after pregnancy, with the gradual increase of the fetus, the uterus will gradually increase in size, uterine growth will first take the surrounding ligaments and surrounding tissues, thus causing pain, but most of the pain is not obvious. 2. Abdominal cold: It may be caused by the intestinal spasm after the pregnant woman’s abdomen is cold, thus causing the symptoms, and may be accompanied by diarrhea. 3. Pre-eclampsia: If pre-eclampsia occurs, it will not only lead to constant pain in the stomach, but also often accompanied by vaginal bleeding. 4. Ectopic pregnancy: is the occurrence of fertilized eggs outside the fallopian tube bed, with the gradual growth and development of the embryo, will easily lead to obvious abdominal pain, and may be accompanied by vaginal bleeding. Pregnant women’s stomach pain may also be caused by other reasons, if the symptoms continue to be unrelieved, you should consult a doctor to find out the cause.