Not sure if this is the problem, but it is the cause of most ED issues for men your age - the use of internet porn. We hve seen so many men with this problem, and the "experts" don't have a clue. They don't understand neurobiology of erections, or how Internet porn can alter the brain. So, it's porn, not masturbation that can do this to men.
Start by educating yourself.
Here's the thread you should look at for porn-induced ED. If you control find - "palpateit", you will see my posts. The first 2 posts have links to presentations and articles about porn-induced ED.
http://www.medhelp.org/posts/Mens-Health/22-with-porn-induced-erectile-dysfunction/show/469209