If the symptoms persist or worsen, you need to consult a doctor to find out the cause of the problem: 1. If the growing uterus presses on the blood vessels causing obstacles to the venous return of the lower extremities, swelling and pain caused by edema of the lower extremities, the main purpose is to rest in bed, elevate the affected limbs, appropriate activities to promote venous return, appropriate control of water and sodium intake to control high blood pressure during pregnancy, and if combined with varicose veins, you can wear compression stockings. 2, Combined with lumbar intervertebral disc herniation, as the uterus grows, the pressure in the abdominal cavity increases, which will easily aggravate the symptoms of intervertebral disc herniation, and lower limb pain and numbness will occur. In this case, it is recommended to sleep on a hard board bed, avoid squatting and sitting for a long time, avoid bending over and bearing weight, the pain is more serious, you can carry out the massage of the waist and legs.3, hypocalcemia, pregnant women need to consume more calcium during pregnancy to promote the development of the fetus, if the intake of calcium is insufficient, hypocalcemia may occur, hypocalcemia is prone to cause spasmodic pain in the lower limbs, which generally occurs at night.