Pregnant women always experience a variety of discomforts during pregnancy. Generally speaking, the middle period of pregnancy is the most stable period when the baby is in the uterine cavity. However, if you experience vague stomach pains, it is important to be vigilant and identify the specific cause and then deal with it. Most of the vague stomach pains in the middle of pregnancy are considered to be caused by irregular uterine contractions, which often occur after sexual intercourse, after a long walk or when a pregnant woman is too emotional or not well rested. When this symptom appears, pregnant women should immediately rest in bed, relax, do not have too much stress, pay attention to observation, if the symptoms disappear, it does not matter, if the symptoms continue not to relieve, should go to the hospital for consultation.