Hello, I have this problem. When I masturbate, I have absolutely no problem getting an erection. I had a sex for the first time, I was having trouble getting an erection, and after I reached orgasm for the first time, I couldnt get another erection. I gotta say I was quite stressed since it was my first time. I assume this problem is psychological, will this disappear when I have sex next time or do I need to visit some doctor?