hmmmm

So my boyfriend and I had sex. But when he put the confom on he was in such a rush he started to put it on the wrong way, so he flipped it around and we used it. He says he didn't pre cum and he didn't cum in the confom at all.... am I being paranoid/stupid? Getting pregnant is my biggest fear so I freak out, I promise I took sex Ed and I get safe sex I just need another girls reassurance....