‼️‼️pregnant or just irregular period

anon
i had unprotected sex two months ago (he pulled out before ejaculation), after 7 days i had my period, it was a week earlier than usual but the length of my regular period, i don't normally track my period but as of right now it is counted 5 days late. could i be pregnant or just irregular due to stress? i'm a little crampy but aside of that i'm having typical pms symptoms.