Most of the pins and needles sensation in the vaginal area during late pregnancy is caused by uterine compression, pseudo-uterine contraction, and oversized fetus. 1. Uterine compression: with the gradual increase in pregnancy, the pregnant woman’s uterus will gradually increase in size, resulting in uterine compression of venous blood return to the lower extremities, resulting in varicose veins in the vaginal area or edema and other phenomena, resulting in a pins and needles sensation. 2. False uterine contractions: In late pregnancy, there will be false uterine contractions near the time of delivery, which will cause pain and pins and needles in the vaginal area. 3. Fetus is too big: If the fetus is too big, it will cause excessive pulling of the ligament muscles in the groin and pelvis, which will cause spasm in the vaginal area and produce tingling sensation. Pregnant women in late pregnancy is recommended to rest as much as possible, avoid prolonged sitting and standing, if the body is not feeling well, you can go to the hospital in time to do the relevant examination.