Pregnancy

I know this may sound stupid but I’m 18 and well I had unprotected sex with someone I have been on and off with for the last year and I got my implant out in December because it was really messing with my body and When we did it he didn’t pull out he was telling me that he forgot that I didn’t have it and said to me that we will be fine but I’m really scared because i looked at my calendar and it said it was the day after my ovulation and I don’t know if there is any chance I could get pregnant