help me please 😔

I may or may not have had a sneaky link with my ex tuesday night and my stomach started hurting directly after we had sex and hasn’t stopped since 😭 it feels kind of like a cramp but it’s less intense and my period is coming up (like 5 days away) but i’m stressing that i may be pregnant 🥺 can you even tell that early on?? i’ve suddenly lost my appetite and almost threw up last night at dinner 😕 i’m scared. it’s not necessarily painful, just an uncomfortable sensation. google told me it could be from having an intense O or having built up gas or constipation but i don’t think i even finished and i haven’t had problems in the digestive area. HELP. ME. PLEASEE. 😭