When you are pregnant, you will have leukorrhea, and it will be more than non-pregnancy, this is because of the increase of estrogen secretion after pregnancy, which prompts the cervical glands to increase the secretion, so the leukorrhea will increase. Normal situation: If the leukorrhea is milky white, has no odor and does not cause vulvar itching, it is a normal physiological phenomenon during pregnancy; Abnormal situation: If the leukorrhea is yellowish in color, has an odor and is accompanied by symptoms such as vulvar itching, you need to tell your doctor and undergo a relevant examination during the maternity checkup to determine whether there are infectious diseases such as vaginitis or cervicitis. According to the doctor’s advice, medication can be used to treat the condition because persistent vaginitis may increase the infection of the uterine cavity and increase the risk of premature rupture of membranes, thus affecting the health and growth of the fetus. For normal pregnancy, the vaginal mucus plug localized in the cervix can act as a physical barrier, reducing the possibility of upward infection of vaginal bacteria into the uterine cavity, which is conducive to the normal growth and development of the fetus. Therefore, during pregnancy, you must pay attention to personal hygiene, rinse the vulva with warm water, change underwear frequently, keep clean and dry.