So confused???😩😭Someone help!

My bf and I finally decided to have sex but it was only a few minutes long because I was just worried bc it was my first time. We stopped, he was wearing a condom. He obviously didn’t cum because we stopped before it even got to that. I’m pretty sure there was pre cum in the condom but I’m just worried it can cause a pregnancy?? I know it sounds stupid but I’ve never had sex before and I’ve heard that pre cum causes pregnancy but a really low chance. And since it was the first time a penis has been inside me with pre cum in the condom, I’m just freaking out? Is this possible? Also even if the guy actually cums inside the condom I know that there’s no risk of pregnancy so I don’t know why I’m scared if he didn’t even cum. I think it’s the thought that a penis was actually inside me.