The presence of yellow discharge at the beginning of pregnancy is due to the imbalance of the vaginal flora environment or the lack of good vaginal hygiene, which may exist due to the excess of progesterone in the body. If there are no uncomfortable conditions, such as itching, odor, redness and swelling, you can wash your vulva with warm water every day and change your underwear in time to prevent infection. If there is itching, odor or even redness, it suggests the presence of vaginitis. It is recommended to go to the obstetrics and gynecology department for routine tests of the leukorrhea to rule out any effects. If the yellow discharge indicates the presence of increased white blood cells, vaginal plugs should be administered to help the disease improve quickly so as not to cause an upstream infection.