HELP I NEED HELP FROM ALL LADIES WITH POCOS

Sophia
Hi I'm 16 and I had sex for the first time on Tuesday last week  but I have POCOS and I'm on special medication that fources me to drop an egg and ovulate but my boyfriend didn't cum in me but I'm affraid pre cum may have fertilized my egg is it possible or is it just late comming down 
I take my pills the first ten days of every month and then my period normal appears 2-3 days after it's been 3-4 days should I be worried about being preggers