If your underwear is always wet during pregnancy, this condition is mostly considered to be caused by increased secretions in the vagina. However, for pregnant women in the middle and late stages of pregnancy, they should also be highly alert to the possibility of rupture of the fetal membranes and amniotic fluid outflow.1. If this symptom occurs in the early stages of pregnancy, it is usually due to the increase of secretions in the vagina. After pregnancy because of the body’s hormone level change, will lead to the cervical area of the gland secretion increase, the vaginal wall of the oozing increase, so that the secretion increase. As long as there is no obvious odor and itching symptoms, it is generally a normal phenomenon and does not require special treatment, but you need to change your underwear frequently.2. If this symptom occurs in the middle or late stages of pregnancy, it is best to go to the hospital when the symptoms are more pronounced, and carry out the necessary laboratory tests to ascertain whether there is a possibility of rupture of the amniotic fluid.