could it happen??

i might be giving tmi but i need some words of wisdom or just some plain advice. while my bf and i were having sex, he wore a condom. he finished but kept going and finished again, all in the same condom. he was going to keep going a third time when i told him to stop. he then realized that the condom had slipped off. it was still inside me and when he took it out everything was inside. it didnt seem like anything had leaked or popped but i am starting to freak out! is it possible that any sperm got inside?? could i have gotten pregnant?