Some pregnant women experience pain in the left side of the rib cage after pregnancy, which may be caused by the pressure of the growing fetus. After pregnancy, with the increase of pregnancy weeks, the fetus gradually grows, the space in the pelvic and abdominal cavity of pregnant women will gradually become smaller, the enlarged fetus occupies the abdominal cavity so that the diaphragm is lifted, the ribs and the muscles in the middle of the ribs are strained, and the performance of rib pain appears, some pregnant women eat more full symptoms will be more serious. If this condition occurs, it is recommended that the pregnant woman rest in bed, and try to lie on the opposite side of the bed to avoid pressure on the painful side. At the same time, you can pay attention to eating less and more meals, avoid overeating, after these treatments, pregnant women with mild symptoms can be relieved.