The appearance of a snot-like consistency on a woman’s underwear is probably leukorrhea that occurs during ovulation. Developmentally mature women almost always have endometrial, cervical, and vaginal secretions, mixed together to form the leukorrhea, the vagina play a lubricating role, but also to maintain the vaginal environment pH balance, to maintain the normal bacterial flora, to avoid causing opportunistic bacterial infections, causing vaginitis. Women’s normal leukorrhea will continue to change with the menstrual cycle, generally after the menstrual period, because the body’s estrogen secretion is low, the amount of leukorrhea is relatively small, in the ovulation period due to increased secretion of estrogen and progesterone, leukorrhea will gradually increase, and was thin, transparent filament, very tough, stained to the underwear will be a mucus like snot. After ovulation, with the increase of progesterone secretion, the amount of leukorrhea gradually decreases, and becomes viscous, lumpy, and the toughness is gradually weakened.