Rib pain under the chest in late pregnancy is considered to be due to the increased pressure in the abdominopelvic cavity as the fetus grows and develops, which compresses the local blood circulation. Slow blood circulation in turn leads to rib pain under the chest. It may also be related to costochondritis and intercostal neuralgia. These causes of rib pain, there are mainly the following methods can be relieved. 1, pregnant women should pay attention to their own position, usually appropriate to increase the lying down or side lying position, and reduce long-term standing or walking. Because long-term standing or walking due to gravity, resulting in poor venous return and thus cause rib pain. 2, you can consider with warm water bags and other local hot compresses to reduce the pain symptoms. Through the hot compress can promote blood circulation, and then reduce the local pain.