Hidden pain in the stomach in the 6th month of pregnancy may be caused by false contractions, pre-miscarriage and other reasons. In the sixth month of pregnancy, the size of the fetus gradually increases, and it moves frequently in the uterine cavity, which stimulates the uterine wall and causes false contractions, resulting in a vague pain in the stomach. At this time, the time of stomach pain is relatively short, the interval is relatively long, this kind of situation pregnant women do not need to worry too much. If the pregnant woman is hit by external forces, heavy physical labor or mental stimulation, there will also be a vague pain in the stomach, and gradually aggravate the trend. If it is accompanied by a burst of hardness and tightness in the stomach, it may be the occurrence of regular contractions, and there is a possibility of preterm miscarriage. There may be other reasons for the vague pain in the stomach in the 6th month of pregnancy, and it is recommended to go to the hospital for examination and standardized treatment.