So I’m 12 days late for my period, but haven’t had sex in 3 months so I really don’t think I’m pregnant. I have consistently been having kinda unstable periods, like they’ve been late for 5-10 days, but never this late. I did have a period 48 days ago though. My cycle is typically longer, 35-40 days. My boyfriend and I have been messing around, but not enough to get me pregnant in my opinion, meaning we haven’t come close to sex or him ejaculating near my vagina. I’ve also been really stressed because of final exams, but I haven’t missed a period in 3ish years. What should I do?