Only after the fertilized egg enters the uterine cavity and is laid, the trophoblast cells start to secrete blood HCG and the hormone level in the body gradually changes accordingly. After the increase in leukorrhea, there is no clinical odor or only a faint fishy smell, only an increase in volume, and there are no other symptoms. It is advisable to keep the vulva clean during pregnancy if the leukorrhea increases, wash the vulva with warm water 1-2 times a day, and be sure to change your underwear regularly, it is best to wash the underwear with water and dry it in the sun, this will play a sterilizing and disinfecting effect and reduce the possibility of reproductive tract infections.