I don’t know what to title this....

Hi, so I’m kind of freaking out right now and I don’t know where else to turn but this app. I lost my virginity today to my boyfriend. We were both virgins before this and the thing is, is that for a few like 20 seconds he went in unprotected cause we weren’t really planing to have actual sex. After those 20 second he put on a condom and he did finish but he even pulled out before coming and came in the condom. I’m super scared about the first 20 second and I’m worried about the pre-come. The thing is he’s been telling me it’s okay cause he hadn’t came in a few days and he hadn’t came that day and that the pre-come wouldn’t have any seman actually in it. I’m just really scared right now. I’m still in high school and I feel like I’ve really made a mistake. Not because I don’t love him and that I don’t trust him because I do fully. But because I’m scared we weren’t safe enough and that we’ve done something very immature. Me and my boyfriend were talking about the fact I was scared I would possibly get pregnant and that I wouldn’t want to have the baby if I did and he got very mad at me for saying that I wouldn’t wanna keep it. Now we’re fighting and I just don’t know what to do. Please help. I don’t know what to do.