Hello, Abdomen pain is more common during early pregnancy and stomach pain goes away in second trimester. In the third trimester, abdominal pain can reappear as the uterus begins to crowd the organs. Some women experience heartburn or a sensation that the skin of the stomach is stretching. Having stomach pain in the third trimester may indicate a more serious problem if it occurs with other symptoms, such as itching, feels sudden or intense, if it is constant, in a specific location and appears alongside a fever, nausea, or vomiting, appears alongside vaginal bleeding. If those complaints are not present then it’s normal. Causes of this pain due to: - Constipation and gas - Acid reflux - Stretching skin - Muscle pain and strain - Contractions True labor contractions typically start at the top of the uterus, causing an intense tightening sensation that becomes progressively more painful. Hope I have answered your question. Let me know if I can assist you further. Regards, Dr. Arup Majumdar, General & Family Physician