Hi Adam,Well you will find that a lot of the real young guys are having problems with ED, are having them from either over mastrubating, or masturbating to porn, both of these are big problems.
And some do have like you problems with meds, stress and anxiety.
As for your testosterone levels get some blood tests done and see how levels are doing, but if your having things like loss of muscle bulk, hair or beard not growing the way it used to, these are signs of low testosterone.
Me I have hed ED I'm sort of in recovery, but can have the odd of week, I got over mine by doing my own research, so I'm on hormones and herbs, if you want my lists come back to me.
You say did not affect you for 12 years, and ED is a side effect, well all I can say is you were very lucky guy to have gone that far, can your doctor give you a change of pain killers, you may find that could work, something to do the same job but not so agressive to you body, as its 20 years on now.
I have suffered from ED for my entire life. I first had sex at age 19 and soon realized something was wrong. I am now 27 years old and for the last 4 years, I gave up on all the doctors and specialists I have visited. I now self medicate and have found a very feasible treatment. Every GP, Urologist, Endocrinologist, and Psychiatrist I have gone to has told me that there is nothing wrong with me physically, it must all be in my head. I had to self experiment with treatment without the consultation of a doctor because none of them knew what was wrong. I experimented with testosterone therapy, HCG, and clomid at different times. While these therapies helped, the best treatment I have found is a compound derived from Melanotan 2. Bremelanotide (PT-141) is a synthetic peptide that simulates melacortin (the chemical responsible for pigment in your skin). One of the side effects is extra sensitivity in the genital region, and erections in men. I have obtained the highest quality erections from this compound, far greater than any combination of Viagra, Cialis, or Levitra. If you have been cleared by a urologist as not having a pumping problem, and the doctors suspect it is psychogenic ED, then you need to try this peptide. I have been able to have an amazing sex life which has greatly enhanced my romantic relationship with my girlfriend. I wish you the best of luck adams48.