21 yrs old with Erectile Dysfunction?

I have a BIG problem: Twice last week I went out to the bar and BOTH times I brought a different girl home that was DTF (down to ****). Both times I was fairly drunk.

And yet, sadly, I have not gotten laid in a year. I'M IN COLLEGE FOR CHRISTS SAKE!

Both times I was unable to obtain an erection. (And about 3/5 times before that last year as well) SOOOOO EMBARRASSING!!!!!!

I have been extremely depressed the past few days but now I am trying to take a more proactive approach with this. I have been researching and I have kind of boiled down my problem to several potential causes:

1) Pornography - I hear excessive porn can cause ED. Effective immediately, I'm stopping PMO as long as I can.

2) Smoking cigarettes - recently (about the last 5-6 months). I'm gonna quit

3) Alcohol - I drink (sometimes heavily with my friends). I'm cutting back.

4) Exercise - or lack there of! I used to be in great shape in high school and I've fallen out of shape this past year. Does working out REALLY help?

5) Medication - I have taken the same ADD medicine since high school but I can't find any sexual related side effects.

For God's sake, I'm 21! I should NOT be having trouble getting an erection when a BEAUTIFUL girl is literally BEGGING for it in my own bed.

Sometimes I can't get it up at all, sometimes I fly at "half mast" and don't get hard enough for penetration, and others I lose the erection as I'm messing with the condom. And for me, once it's gone.... it's gone.

I REALLY don't want to go on Viagra or any drug like that.

*****These problems have made me question every aspect of my life (such as what if I get divorced or never even get married because the sex isn't good enough? Am I doomed to live a sexless life?).*****

Also, I don't have any trouble getting an erection when I'm alone, which is the saddest part. I'd rather it be the other way around!!!

I hope this helps someone.

PLEASE GIVE ME ANY ADVICE YOU HAVE (especially if you have been though this).

[palpateit]

If you are 21, and not on specific medications and don't have a serious medical condition, the causes of your copulatory ED are almost certainly anxiety or porn—or a combination of the two. Here's a simple comparison test to check for porn-induced ED:
1. Masturbate to your favorite porn.
2. Try to masturbate using no porn and no fantasy - only sensations. Masturbate with same speed and pressure as you would during intercourse.

Compare one and two. How erect was your penis? How long did it take you to reach orgasm? What was your level of excitement? A healthy young man should have no trouble attaining a full erection and masturbating to orgasm without porn or fantasy.
1. If you have a strong erection on #1, but problems on #2, then you have porn-induced ED.
2. If #2 is strong and solid, but you have trouble with a real partner, then you have anxiety induced ED
3. If you have problems during both 1 & 2, you may have severe porn-induced ED, or an organic problem. When in doubt, see a good urologist.

The following 2 links are to Medhelp threads on porn-induced ED. Read the stories. If you want to know more locate my first 2 posts on the link #1

http://www.medhelp.org/posts/Mens-Health/22-with-porn-induced-erectiledysfunction/show/469209?page=1

http://www.medhelp.org/posts/Mens-Health/Too-much-porn-masturbation-cause-ED/show/183203

On  GOOGLE VIDEO find  “Erectile Dysfunction And Porn” - watch the video series.

Here’s a Psychology Today article on it
Porn-Induced Sexual Dysfunction Is A Growing Problem
http://www.psychologytoday.com/blog/cupids-poisoned-arrow/201107/porn-induced-sexual-dysfunction-is-growing-problem

PS - all the other factors listed are irrelevant at age 21.