The 35 weeks of pregnancy vague stomach pain may be related to the following factors: 1st, consider the pseudo contractions caused by many pregnant women in late pregnancy due to increased uterine sensitivity, uterine enlargement may appear abdominal vague pain, this situation is normal, if the frequency of uterine contractions is not high, the pain is light can not worry, usually pay more attention to rest, observe the fetal movement of the fetus. If the pain is accompanied by redness and other problems, you need to go to the hospital in time to check if there is a premature birth. The second, there may be due to pregnancy, the uterus pressure to other parts of the body, resulting in abdominal pain, while the fetus in motion will also produce stimulation of the abdomen, resulting in pain symptoms, pain can not be treated when the pain is mild, the pain is severe, it is best to seek medical attention.