Biological or emotional?

So today me and this guy I like we're hanging out. We went for a walk then came back to my place and he asked me to rub his shoulder & I asked him to rub me haha. It was nice then it started feeling REALLY REALLY good & I realized he'd slipped his dick in me. It was feeling really good & I got super dizzy. Is it normal to get so dizzy during sex? (For reference this was my first time ever having raw sex. I'm 26)