first time, please help

K
Okay, so I'm 21, and me and my boyfriend just had sex for the first time a couple days ago. I'm not set to start for over a week, but it was my first time ever having sex so I am paranoid as hell.
We had sex three times, used a condom all three times. He came once but pulled out well before and was not inside or near me. Checked all the condoms and they all looked and felt fine each time, didn't have leaks or anything like that, so it should have been affective.
I'm still anxious though bc I have really bad anxiety, will anyone please talk me through this? This is all completely new to me