Performance anxiety is more common than you might think! If you are able to get it up watching porn, or masturbating, that proves that it’s just a psychological issue. Not that it solves your problem, but it’s the first step to overcome it. Just be convinced that your body is perfectly OK and forget the “impotent” bulls**t!
You are not alone, many of us were there too! :) You will eventually control this anxiety and manage to relax. The key is not to think about it: don’t monitor your boner, forget you have to get it up! If you focus on getting it up, you might forget it as well, because it won’t happen. Instead, you should just enjoy being with the girl and let things happen.
To get more confidence, it would be a good idea to use some pills for the first time. It’s far more important to you to get rid of anxiety than the embarrassment to see a doctor for a one time prescription!
Thank you for the reply Cervix! I also think this is the key to my problem, but It’s easier said than done to not think about it.
But is it likely that I will get a prescription from a doctor at my age (21) ?