Stomach or belly discomfort is more prevalent in early pregnancy, when hormonal changes can cause morning sickness nausea and vomiting. Stomach pain normally goes away about 20 weeks, in the middle of the second trimester. As the uterus begins to press the organs in the third trimester, stomach discomfort may resurface. These symptoms should be reported to your doctor, as they may indicate a problem with your pregnancy. Stomach pain that persists beyond the first trimester needs attention. If you are experiencing severe abdominal pain that doesn't seem to get better with rest, see your physician immediately. You could have an ectopic pregnancy where the fertilized egg implants outside the uterus, such as in the fallopian tube, causing damage and requiring surgery to save the life of the embryo. Or, you might have a gastrointestinal disorder such as ulcers or gastroenteritis that can also require medical attention. In addition to seeing your doctor if your stomach pain lasts longer than expected, there are some common problems that can be diagnosed using simple blood tests or imaging techniques. For example, anemia due to chronic stomach pain can be diagnosed using a simple blood test. The same is true for diverticulosis, which is the name given to small pouches that form in the colon as it stretches during pregnancy. These pouches can become painful during pregnancy and may require surgery after the baby is born.