If in the early stage of pregnancy, the back pain is very strong, it may be caused by the following reasons: the first reason is that the uterus is in a state of retroflexion and posterior tilt, then after pregnancy, as the uterus increases, it will stimulate the retroperitoneum, so it will cause the back pain to be stronger. The second reason is because of the past chronic cervicitis, and the inflammation has spread to the sacral ligament, resulting in inflammation of the sacral ligament, then after pregnancy, the state of pelvic congestion will be aggravated, so the symptoms of lumbago will be more severe. It is recommended that before pregnancy, it is best to do a health check, if there is inflammation, to give the appropriate treatment, if the uterus posterior flexion posterior tilt position, it is recommended that usually sleep on your back before pregnancy, will correct the state of the uterus posterior flexion posterior tilt. This reduces the symptoms of back pain after pregnancy.