Some people will feel lower body pain after pregnancy, even pain when turning over, coughing, or defecating. This condition is caused by separation of the pubic symphysis. There are two pubic bones on the left and right, which together form the front edge of the pelvis. The pubic bones are connected by fibrocartilage and reinforced by ligaments, making them difficult to move. After pregnancy, due to the influence of hormones, the two pubic bones are slightly separated to facilitate the smooth delivery of the fetus in the future. However, if the distance between the pubic bones is large, it will cause traction pain when walking, especially in the upper part of the body.