Can I be or ?

Ok so I been on birth control for about a year now or so and just a couple weeks ago I stopped taking the pills(03 weeks ago) Anyways I have an irregular period. I know the pill sometimes skips your period bc I’ve had that happened to me once. Well i had unprotected sex with my SO just before I stopped taking the pill & during the time I’ve been off (we’re ttc) & haven’t gotten my period. This app says I should’ve gotten my period two weeks ago and usually when my period comes I know the symptoms, which none have accrued yet. I’ve been feeling ALLOT of nausea , been super emotional for no reason or just moody over things that don’t matter & small cravings here and there. Is it possible I can be pregnant or ?