Period feb 9..ovulated feb 25..sex w condom feb 28th but realized the condom was in me and not on him. pregnant? plan b 10 hours later and another 12h

Maybe: If you have a 28-30 day cycle, then you just had sex during your fertile phase. At your age, you have about a 25% chance of conceiving. Plan b can delay ovulation, but it doesn't reverse it. So if conception already occurred before you took that pill, then it's a done deal. Unfortunately you won't know for about two weeks. Over-the-counter pregnancy tests are very accurate in two weeks.