pregnant?

okay, my period is 15 days late & my last period was 4 days and very very light, might just consider it spotting. I also feel bloated. I have not had sex since before my last “period” however I know spotting is a sign of pregnancy so idk if my last period was really a period or spotting. I am known to have periods be 2+ weeks late as I have only had it for a year and also have spotting a lot, I’m just very paranoid because I just recently had sex.