If women find that there is always discharge on their underwear, it is mostly seen in the following cases: 1. Ovulation, the amount of leucorrhea will increase due to the elevated estrogen and progesterone content during ovulation, but in this case the leucorrhea does not have an odor and does not cause vulvar itching, the leucorrhea is thin and filiform and transparent, there is no special treatment, just pay attention to vulvar cleanliness. 2. Inflammation of the vulva and vagina, such as having mycotic vaginitis, bacterial vaginosis or