If the girl has white mucus on her panties and there is no vulvar itching, no discharge odor, and no localized redness or swelling of the vulva. If the age of 9 years old or above, it is possible that you are going to have menstruation before the phenomenon of increased vaginal discharge. You can keep the vulva clean, for example, you can wash the vulva with water, change the underwear diligently, and give observation. Under normal circumstances, the vast majority of girls get their period around the age of 13-15, and it is normal for the endometrial glands to secrete vigorously prior to menstruation, so this leads to an increase in vaginal discharge. It is normal for girls between the ages of 9 and 18 to menstruate, so don’t be nervous, just observe, but keep the vulva clean.