Depression is very common among diabetics, in fact anyone with a chronic illness is more prone to depression. You say you've been depressed for 6 months. Is that how long you've been on the prozac? And, is it working?
I was on antidepressants about 5 years ago after my son passed away. I have bad side effects with any of those med's, but was able to last long enough to get over the worst of it. There have been a couple of times when I felt I should go back on but the side effects are just intolerable. Did the 'white knuckle' trick and got through. Wouldn't recommend it to others, it was just what I had to do.
The only difference between genius and stupidity is that genius has its limits.
-Albert Einstein (1879-1955)