Sudden stomach pain when pregnant and dancing may be caused by the enlargement of the uterus itself, or it may be the case of preterm miscarriage or preterm labor, which needs to be dealt with according to the month of pregnancy and contractions accordingly. 1. Enlargement of the uterus: After pregnancy, the uterus will gradually increase in size with the increase of the month of pregnancy, the uterine muscle wall tissues are pulled, coupled with the uterus for the pressure on the surrounding tissues, abdominal pain symptoms will occur. Dancing can cause localized irritation, making the pain more pronounced. If there are no uterine contractions, close observation and rest are sufficient. 2. Pre-eclampsia or preterm labor: when you are pregnant and have stomach pain while dancing, it may also be due to the more strenuous exercise or a larger range of motion, so that the uterus is stimulated, resulting in contractions, leading to the occurrence of pre-eclampsia or preterm labor. It is necessary to go to the hospital in time for examination. If it is diagnosed as preterm labor or premature labor, it is necessary to take the treatment of preserving the fetus by suppressing the contractions under the guidance of the doctor. If the above situation occurs and the fetus is already full-term, then you can seek medical observation in time and observe the progress of labor under the guidance of the doctor. During pregnancy, do not do too strenuous exercise to avoid affecting the mother and the fetus. There may be other causes for this symptom, and patients are advised to seek timely medical attention for a clear diagnosis and targeted treatment to avoid delays.