Is she pregnant!!! help!?

ok well im 15 and i had for the first time yesterday. (it was great) . i did take a condom and i did use it. she was a virgin too. and well at some point the condom came off with out knowing. we keep on going, then i noticed it was off so we stop but i dint ***() but i felt my head wet but i know i dint *** bcuz i dint feel it. my question is is there a chance for her to be pregnant.? please be discrete bout this thank you and god bless you