Stepbrother fucks me bareback! Am I pregnant now?

My stepbrother has often made certain allusions. But I would never have thought that he was so serious about it! We joked around a bit and I told him that I couldn’t imagine that he could fuck properly. How could he – he’s still a long way from being a real man for me at 19. Not even 5 minutes later I found myself wet, horny and on all fours on his bed. His cock was standing straight up and already pulsing with lust. Instead of sticking it in straight away, he first played with a bulging head on my wet hole, stroked my asshole (which made me incredibly horny) and then finally pushed it in. He fucked me so passionately that I came several times and my pussy was really leaking!!! He came and just kept fucking me. Then it suddenly dawned on me, as his juice was already dripping out of my pussy: he didn’t use a condom and came inside me! But then he comes a second time and squirts all his cum onto my ass and my small, tight asshole. Am I pregnant now? Somehow this tension is getting me excited again…