I think I mentioned to you before about gluten sensitivity causing these symptoms. You were under the impression that gluten does not cause Depression which couldnt be further than the truth. Depression and fatigue are the top 2 symtoms of gluten sensitivity. I dont know which website you looked at which told you different but the truth is that Depression is a major symptom of gluten sensitivity. The other symptoms you describe can also occur due to nutritional deficiencies. I think your depression is very worrisome and I was there before so I know. For no other reason than what I was eating I was so depressed I thought of dying everyday. I had no reason to feel this way.....I had always been healthy and happy previously. Although I only tried one antidepressant(prozac)it did nothing for me.
I think if all else fails....and it seems like it has...I would look into trying the diet. It would not take all that long to see if it will help you or not. If affordable you could also test for it.
Have you tried talking to someone...counselor or psychiatrist? Regardless of what could be causing/contributing to your depression it sounds like family issues and stress may have alot to do with your health. Stress can bring on real illness if we continue to stress day in and day out. Stress played a huge role in bringing on my thyroid problems as well as the gluten problems. These are genetic autoimmune conditions and likely could've been avoided if I had been more consious of my health and learned how to manage and deal with stress. I think you need to remove yourself from what is apparantly an unhealthy environment for you to be in.