Cannot ejaculate.

I've done NoFap for almost a month now. I'm still a teen but I have really high testosterone (around 1000 ngdL) so I got horny all the time and masturbated everyday. I always felt something was holding me back and found out it was the masturbation. After doing NoFap my energy levels are high as ever and my dopamine is at its peak. However, after losing my virginity recently and having sex a couple of times, I can't seem to cum. Sex just feels bland and my balls hurt really bad after.

I suspect that the years (2) of masturbation have taught my body to cum a certain way and thus I can't cum through vaginal or oral stimuli. After sex I masturbated again and could cum easily. This has really upset me because what's the point of NoFap if I can't even enjoy actual sex.

I need advice. How do I regain sensitivity and cum from sex? Should I go full cold turkey and not cum or should I gradually release sperm in periods of 1-2 weeks? Is there a specific way to thrust to cum?