More than four months pregnant lying stomach bulge hard, may be the fetus normal fetal movement and other physiological reasons, may also be inflammatory stimulation caused by contractions and other pathological reasons, need to be analyzed specifically.
1. Physiological reasons: with the continuous growth of pregnancy, the fetus and the uterus will gradually increase in size, when the fetus moves, due to the pulling of the muscles will lead to hardening of the abdomen, especially after lying down will be more obvious, such a situation needs to be worried about and dealt with.
2. Pathological reasons: due to reproductive tract infections, inflammation stimulation of the uterine wall caused by uterine contraction, or dietary impurity caused by gastrointestinal dysfunction, resulting in tightness and hardness of the abdomen, appearing in 4 months of pregnancy abdomen bulging hard phenomenon.
There may be other reasons for the hardness of the stomach bulge in the fourth month of pregnancy, it is recommended to go to the hospital for examination and treatment after clarification of the cause.