I just lost my virginity with my girlfriend, but I can't orgasm without imagining things

I have just reached my 10 week Nofap streak of no porn and no masturbation and was expecting things to go well, but it seems that I cannot get off with my girlfriend. I am on antidepressants which probably play a role but I am able to orgasm while picturing things, and while sex feels good, it doesn't feel as good as when I masturbate and I think I have some what of a death grip.

I am now worried that I will never be able to enjoy sex. I am 10 weeks porn and masturbation free but my brain is still used to the porn experience instead of actual sex. It's like I can't just be in the moment and I have to picture something to get off. I even pictured having sex with my girlfriend... while having sex with my girlfriend.

I mean apart from the fact that I can pretty much last forever in bed which can be a good thing I guess, this is making me very frustrated because I'm worried I've permanently damaged my brain and my penis and that I'll never enjoy sex.