Symptoms of pain at the root of the thigh when you are full term and about to give birth are usually caused by nerve compression, sacroiliac arthritis, and varicose veins in the vulva area. As the fetus develops, the uterus enlarges and the pressure of the abdomen on the spine and pelvis increases, which is the main cause of these symptoms. Failure to take calcium supplements during pregnancy, leading to osteoporosis, is also one of the main causes of the onset. For women in late pregnancy, this is a normal physiological phenomenon. The symptoms are usually aggravated during prolonged standing or walking and will be relieved after rest, and will usually disappear on their own after the birth of the child. Lifestyle conditioning is the main measure to relieve this symptom. Eat more calcium-rich foods in daily life, such as milk and soy products. Combine work and rest, do not stand or walk for long periods of time.