Sexual anxiety and can’t get erection

Patient: Hi there, im 21 and i cant seem to get an erection. Me and my lady friend tried having intercourse for the first time the other night and i couldnt get it erect enough to penetrate. Also she sent me some pictures and she wanted one back, and i couldnt even get hard to take a picture. Im fine to get an erection when i dont need it, but when i need it, it wont get fully erect. what can i do about this? thanks.

Doctor: Your best bet is to do some mental exercises. Sometimes getting an erection involves getting lots of focus. Maybe try an d look at some porn or something to help you get in the mood. Hope this helps.