hey man, not to call you out or anything, but didnt you have some methydrol or whatever that shits called? i remember when that shit was popular there was a huge thread going on it and i remember reading some scary stuff about it.
from what ive read about those pro-hormone (basically weak steroids w/ worse side effects) they can have have effects afterwards that almost lay dormant for a while, then creep up on you. depression is also something that a substance like that could cause.
on the other hand, depression can certainly come from other things going on with your body that you wouldnt even realize. certainly take the advice of everyone here and get to however many/whatever doctors you need to get through to see this thing through. depression isnt something to be ashamed/embarrassed about.
were all here to give you a pat on the back in support, but you gotta make the moves. even if you never touch a weight again, thats not the point, dont let whatever this is get you so down that youre just not enjoying your life.
id suggest seeing some MD's for possible physical symptoms and some PhD's to see if they can help you get to the bottom of things that might be bothering you that you dont even realize.
with those PhD's- id further suggest that you seek out a psychologist before a psychiatrist. and also keep in mind that when going to either, you might not making amazing discoveries on your first visit, a lot of people dont, they need to get to know you a little better, and have some time to reflect on what you say in your first meeting.
good luck, keep us posted.