I need opinions

Ok so I know I'm probably going to get some crappy comments but I need advice because I really don't know what to do. My period is 5 days late and if anything I'm usually a day or two early. I know it was stupid of me but I had unprotected sex on the 12th of June. I'm 16 and I don't have my drivers yet and live out of town, but I can't tell my parents for obvious reasons. If anyone has any advice I'll gladly take it.