Blood when I wipe

So I woke up this morning and I went to use the bathroom and when I wiped it was pink with some darker blood. But I'm not supposed to start my period for ten more days and I'm usually never EARLYI'm usually a few days LATE. Me and my boyfriend had sex like two weeks ago we didn't have a condom but he didn't cum in me for sure we always use a condom that was the only time. ( if that helps).... Does anyone know what it could be ? 
I probably sound really dumb but fr I'll just be turning 18 in two months so I'm still learning about stuff.....