From consistent to inconsistent

I didn't get my period for two months, I just got it but it's really light and spotty (it NEVER is) I feel like I'm on the last day of what used to be my normal period cycle. Ever since I first got my period when I was 11 (or 10? I always forget) my cycles in between periods have always been a little long (like 32 days average of no period) but it's always been consistent. I want to chalk it up to stress changes, but it's just so weird? This started happening right before I started college in August, when I missed my period for the first time ever, so maybe it's stress, but it's just so strange for me. Also I am not sexually active in any way so I know I'm not pregnant. Just asking to see if anyone else gets this too so I'm not alone haha.