Many women have this problem mainly because they have vaginal secretions that stick to their underwear and then become crusty. The normal female leucorrhea is milky white with no odor, if you don’t change your panties for a few days, it will stay on top of your panties for too long and therefore will become crusty. Many women also experience this symptom during ovulation and pregnancy, mainly due to increased vaginal discharge and sticky secretions, which can be treated without treatment. If there is no odor or change in the color of the leukorrhea, there is no need to worry about it, but you should pay attention to the symptoms.