After pregnancy, due to the increase of estrogen in the body, the cervical secretion and vaginal secretion will increase, which will lead to the increase of leucorrhea after pregnancy. It is normal for the leukorrhea to remain milky white with a faint fishy smell or no odor. It is recommended to keep the vulva clean, wash the outside of the vagina with warm water and change the underwear regularly, but never douche the inside of the vagina. If you douche the inside of the vagina, it may cause the following consequences: 1) stimulate the contraction of the uterus, which may lead to the abortion of the gestational sac and the uterine wall; 2) if the douche is not used properly, it may bring bacteria into the vagina and aggravate the inflammation of the vagina; you should not douche the inside of the vagina during pregnancy without permission.