Lost virginity without condom

I'm quite concerned atm because two days ago I lost my virginity and didn't use any protection because the both of us couldn't fit the condom over his penis. (He pulled out way longer before he came, most of it was BJ anyways) I know, I know that was so stupid.. but it happened and I can't change it. I'm just too afraid to talk to someone about it but I'm so scared I might get pregnant or anything.. any helpful words? I know there's isn't much I can do but.. maybe someone can help me out