Im 13, and i may have started my period...?

It was brown, and not very much, but i don't know... i have discharge for a while, white usually, so is this the same thing? Though im not sexually active, i masturbate, could that be somthing? I lost my mom when i was young, and i am a family with 8 boys, so i just don't know.
Update: Was that my period?
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