Bleeding in between periods?

So my period isn't supposed to start for another 17 days but when I wiped there was a good amount of blood on the tissue. There's no flow but its not like it was light spotting and it was red so it wasn't old blood. I'm kinda worried because this has never happened to me before and I don't want there to be something wrong with me. I'm not pregnant because I haven't had sex since before my last period. Please help?
Bleeding in between periods?
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