If a woman who is not pregnant has this symptom, it is possible that the uterus is contracting due to inflammation or other undesirable stimuli. It is advisable to go to the hospital for ultrasound and routine examination of vaginal secretions, and according to the examination, take antibiotics for clearing heat and moisture, cephalosporins or pepto-bismol. If it is a woman in early pregnancy, excluding the possibility of ectopic pregnancy, the presence of uterine pins and needles pain does not exclude the possibility of miscarriage. In early pregnancy, if the progesterone level is low or the embryo is underdeveloped, the contraction of the smooth muscle of the uterus may cause pain, and there may also be symptoms of vaginal redness, so you need to go to the hospital in time.