Could I be pregnant if...?

Okay, so my boyfriend and I had sex yesterday without a condom.. I know, stupid. He told me he'd pull out in enough time so his sperm wouldn't go inside me. But he didn't feel it, so a little bit did go in... Also, we did it again today & yet again more went in.. But see, I haven't had a period since last august because I have polycystic ovarian syndrome (PCOS) so I don't even know if I can get pregnant. But I'm still scared because there is still a chance I could.. I'm 16 years old. I'm just young, stupid, and reckless.. I can't help but worry.