The pain in the buttocks at the beginning of pregnancy is a normal physiological reaction caused by the changes in hormone secretion in the body after pregnancy and the relative laxity of the ligaments to adapt to the enlargement of the uterus. If the pain is more serious, it may also be related to calcium deficiency. The symptoms of pain in the buttocks, pay attention to rest, avoid overwork. But also to appropriate activities, avoid prolonged sitting position, avoid maintaining a position for a long time. Take calcium supplements, eat foods rich in high-quality protein and calcium, and get more sunlight and outdoor activities.