I am a 21 year old male, who for the past few months believes he has been suffering slightly from ED. I sometime over the past few months I have had a hard time getting a full erection. Most of the time, when having sex with my girlfriend, I am able to successfully become around and achieve climax. However, I have noticed certain changes in my sex life: I never had a problem with losing an erection during sex, yet during the past few months this has happened several times. Additionally, I feel that my erections are often not as rigid or stiff as they used to be. Finally, I often lose my erections quickly if not being stimulated. My girlfriend, however, says she doesn't notice anything abnormal, however I feel there is.
I have seen my doctor several times about this. He has done physical exams, taken blood, and has deduced that I do not suffer from any STD, from diabetes, or hormone deficiency. He believes I am under too much stress, which may be true, although I feel I was stressed in the past and never suffered from this. He has said that since I am able to orgasm, I would not worry about it being a physical problem.
So, apparently I am under too much stress. Unfortunately, I am a huge worry wort, so now it seems to be a downward spiral. I worry about pleasing my girlfriend, I worry about never being "normal" again, and so on. Has anyone else been in this position and how did they overcome it?