Well I've been getnn like some white stuff that comes out from my vagina but I don't know what it is ? People say its normal for a girl but I don't know its always on my underwears its SO Gross! :(

Unless it changes color, causes itching, has the consistency of cottage cheese, or comes with a foul odor, it likely is just normal discharge. You can always check in with your doctor if you're worried it's anything other than normal discharge, always better safe than sorry. To avoid it getting on your underwear, I'd get some pantyliners. Go for the unscented ones to avoid any irritation.