The composition of normal leukorrhea is a mixture of vaginal mucosal exudate, cervical secretions and some endometrial secretions, without odor. The amount of leukorrhea varies for each person, which is related to the level of estrogen in the body and the degree of genital congestion. Once the pregnancy estrogen and progesterone change drastically, the female leucorrhea will also change accordingly. The main change in leukorrhea in early pregnancy is an increase in quantity. Most people will notice a significant increase in vaginal discharge after pregnancy because the level of estrogen in the body will increase significantly after pregnancy, and the amount of leucorrhea will increase with the increase of estrogen level in the body. However, the increase in leukorrhea can only be compared by itself and is not noticeable in some people. In addition to the increase in leukorrhea, it may be accompanied by changes in color and odor. Because the amount of leukorrhea may remain in the vagina for a long time, it is easy to have a darker color and a slightly sour smell. Usually, you must pay attention to keep it clean, clean your vulva with warm water every day, change your underwear regularly, and try not to pad it. If there is itching, odor and blood in the vagina, you should go to the hospital for examination in time. In the early stages of pregnancy, the resistance to vaginitis is reduced and you should go to the hospital for examination when you have uncomfortable symptoms.