In the early stage of pregnancy, if the feeling of lumbago and stomach drop occurs, it is often caused by the following reasons: 1. As the uterus increases in size during pregnancy, it may cause the pulling of ligaments due to gravity, so the feeling of stomach drop will occur. In addition, if the uterus is in a retroflexion and retroversion position, it will stimulate the retroperitoneum, which will also cause the feeling of lumbar pain. It is recommended that it is best to give proper clinical rest. 2. Due to insufficient hormone levels in the body, causing the symptoms of preterm abortion, this feeling of falling stomach will not be relieved by rest. It is recommended that it is best to draw blood to check blood HCG and progesterone, and if progesterone is reduced, timely supplementation of progesterone can relieve the smooth muscle of the uterus If progesterone is lower, timely supplementation of progesterone can relieve the smooth muscle of the uterus and relieve the symptoms of preterm abortion.