38 weeks pregnant thigh root special pain may be due to uterine enlargement, fetal compression, inappropriate activities, calcium deficiency and other reasons: 1, uterine enlargement: with the uterus in late pregnancy continues to grow, abdominal pressure increases, which can lead to special pain in the thigh root of pregnant women, usually involving pain; 2, fetal compression: with the increase in the number of weeks of gestation, the fetus continues to develop, 38 weeks pregnant may be compression of the nervous system Or affect the lower vena cava return of pregnant women, the phenomenon of special pain in the thigh root; 3, inappropriate activities: if the pregnant woman occurs cumulative strain, or excessive hip abduction, sudden pull, lower limb kicking and lifting the leg excessively, etc. can be caused by femoral intramuscular group injuries, there can be a special pain in the root of the thigh; 4, lack of calcium: during pregnancy, with the continuous growth and development of the fetus, the need for calcium is more and more, 38 weeks of pregnancy may be a calcium deficiency. Calcium deficiency: During pregnancy, as the fetus continues to grow and develop, there is an increasing demand for calcium, and calcium deficiency may occur during the 38th week of pregnancy, which may lead to the emergence of special pain in the thighs. Pregnant women with thigh pain should pay attention to whether it is accompanied by other symptoms of labor, such as irregular contractions, the feeling of the fetus descending, or redness. If the above symptoms occur, labor may be imminent, and you should be hospitalized in time to wait for delivery. If there are no symptoms of labor, local massage can be used to relieve the pain. At the same time, attention should be paid to calcium supplementation and sun exposure to promote calcium absorption. If the pain symptoms continue to aggravate or are not relieved for a long time, you should go to the hospital in time to rule out any other organic diseases and treat the symptoms.