HELPPP

Okay so I know this is dumb but I'm stressing cos I stayed the night at my boyfriends house a couple nights ago and we almost had sex for the first time(im a vergin, or was one, idk if this counts😂) he put it in and then I freaked out and told him to stop so he did. He had a condom on but im still stressing about getting pregnant like I know it's highly unlikely but I'm so worried so please help and give me reassurance😂 oh and I'm 17 and so is he so it's not like I'm too young or anything and we had both agreed and talked about it before hand