Could I be pregnant?

[Lilpotatos]

I had unprotected sex on July 14 & then had protected sex on July 21 then I got my period on the 31 of July which it was only 3 days late but I still got it and it lasted for 3 days like usual but now is October & I never got my period for the whole month of September I’m very regular I don’t exercise or have any eating disorders or I’m not stressed at all . all I do is when I come back from school is sleep sometimes I sleep for two days straight & my nipple been hurting a lot & when ever I pee my vagina smells like semen plus I been craving waffles could I be pregnant or maybe sometimes else ps I’m a 16 year old girl