With the gradual growth of the fetus, there is a greater consumption of calcium and sodium, which may cause swelling of the hands during pregnancy and so on. After pregnancy accompanied by dramatic changes in hormone levels, the main manifestation in the bone and joint is that the ligaments become looser and the joints become looser. Many pregnant women experience herniated discs in the lumbar spine after pregnancy, which is mainly related to the ligaments becoming looser. Pain in the sacroiliac joints also occurs, which is also caused by changes in hormone levels, and the ligamentous structures that hold the sacroiliac joints in place become relatively lax, causing pain. At first, conservative treatment can be used, such as elevation of the affected limbs, hot water hand soak, etc. If the symptoms do not decrease, it is necessary to consult a doctor in time, check the blood pressure, laboratory tests and other tests to clarify the cause of the disease.