The causes of stomach pain during pregnancy vary according to the week of pregnancy. The specific conditions include the following: 1. Abdominal pain symptoms occurring during early pregnancy may be a sign of preterm miscarriage or a physiological reaction caused by the enlargement of the uterus and pelvic congestion. In addition, in case of ectopic pregnancy, that is, ectopic pregnancy, abdominal pain may also occur and may be accompanied by a small amount of bleeding, which often manifests itself 6-7 weeks after fertilization and may also manifest itself in the fourth week. If abdominal pain occurs in ectopic pregnancy and is not treated in time, tubal rupture may occur and endanger life, so attention should be paid to it; 2. abdominal pain symptoms in the middle and late stages of pregnancy are generally considered to be caused by irregular uterine contractions, or caused by the pulling of the round ligaments on both sides of the uterus; 3. abdominal pain symptoms that occur before labor are a kind of false contraction, which is a precursor to labor, while the full-term The regular abdominal pain that appears after the full term is the manifestation of labor. In addition to the above, pregnant women may also suffer from intestinal cramps caused by eating spoiled or cold food, which may lead to stomach pain. It may also be caused by acute gastritis, gastroenteritis, acute pancreatitis, appendicitis and uterine fibroid degeneration, etc. In this case, timely medical treatment is needed to avoid affecting pregnancy.