Women during pregnancy appear always yellow on their underwear, with yellow leucorrhea caused by the performance, consider the following possibilities: first, due to women after pregnancy, the body damp heat down to stimulate the performance, this is simply the appearance of yellow leucorrhea, there will be no other abnormalities. Second, caused by vaginitis, such as bacterial vaginitis, or miscellaneous vaginitis. Third, caused by cervicitis, because after pregnancy the body’s hormone level is higher, which will stimulate the aggravation of erosion, causing cervicitis performance more obvious.