I Took An Ipill 48 Hours After Unprotected Sex. He

I took an ipill 48 hours after unprotected sex. He did not penetrate deep during ejaculation when we had sex. In Jan my periods was from 18th on for 7 days. After sex, I got it again on 3rd Feb for 4-5 days. Not heavy bleeding like usual though. Its march and im 10days late according to the new cycle started on Feb 3rd. I had food poisoning a few days back though and had to take ciprofloxacin, dolo and a tablet for diarrhoea. Should I be worried of pregnancy? My cycle is never late usually.