So I'm kinda freaking out because my period is 5 days late and that's not normal for me at all. Me and my boyfriend had protected sex in the beginning of September. I know it's highly unlikely for me to be pregnant but that's all that has been flowing through my head. I know, I know I should be on birth control but my mom won't let me and I'm 19. I'm just going to ease my mind and take a pregnancy test tomorrow. But if I'm not pregnant then what else can be making my period this late?