Hey David,
All the physical symptoms you mentioned are symptoms of masturbation/exccessive ejaculation. I suffered from all of these things and even more extreme things. Masturbation and porn also makes you ugly, very ugly.
The bottom line is that you have to break this bad habit/addiction. If you don't, then things will surely and inevitably go rapidly downhill.
I took things to the point where my back ached all the time, my back became stooped, I was incontinent, IMPOTENT at the age of 21!!!, and I literally felt like I had one foot in the grave already. I hated God, life, people, myself and I wanted to commit suicide.
Also, it doesn't just end with physical suffering. Far worse, is the spiritual damage that this disease causes. I don't want to bore you with a whole list of things that I experienced, but trust me when I say that this is no less dangerous than being a heroin addict. (Perhaps even more so)
If you're interested, you can read my recovery story to find out more of the things this addiction did to my life:
www.guardureyes.com/GUE/Stories/RecStory8.asp I hope that helps and don't give up.
DL