Tightness and hardness of the stomach at 36 weeks of pregnancy, if there is no painful feeling, it means that it is a physiological manifestation of pseudo contractions, and not a manifestation of imminent birth, it should be caused by the contraction of the uterus due to the stimulation of the fetus when it moves in the uterine cavity, or caused by external stimulation, which is a normal manifestation, there is no need to be too nervous about the process of tightness and hardness of the stomach. If you feel uncomfortable, you can use your hands to hold up your sagging abdomen to reduce the pain or cramping sensation caused by tension in the abdominal wall. If during this period accompanied by stomach pain, and tightness, hardness phenomenon, indicates that there is a pre-miscarriage performance, should be timely preservation of the fetus.