In the fourth month of pregnancy, a hard feeling in the stomach appears. If there is no pain, this is a physiological manifestation, because the uterus enlarges during the fetal activity, showing uterine contraction, showing the feeling of a hard stomach, this situation does not require special treatment, try to pay attention to bed rest, do not strenuous exercise. If your stomach is hard, you can kneel on the bed with both knees, this will help to reduce the tension of the abdominal wall and reduce the feeling of a hard stomach, this symptom will not affect the growth of the fetus, usually try to pay attention to relaxation, do not be too nervous, if too much pressure or too nervous, will affect the growth of the fetus, usually should develop good habits, moderate amount of more fresh fruits and vegetables Do not eat spicy and stimulating food.