What is this white stuff on my underwear?

everytime i look at my underwear it is moist and there is dry white stuff. And when i wipe my vagina sometimes the white stuff comes out slimy and stringy and gross, but other times it comes out in clumps. This happens everyday pretty much. i head it is discharge but is that normal? and is it normal for it to... show more everytime i look at my underwear it is moist and there is dry white stuff. And when i wipe my vagina sometimes the white stuff comes out slimy and stringy and gross, but other times it comes out in clumps. This happens everyday pretty much. i head it is discharge but is that normal? and is it normal for it to happen EVERYDAY?!
i am 16 and i have had my period for 2 years now. Thanks.
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