You have a list of symptoms that fits very well with those in the chelation groups. Almost always there are psych symptoms and poor stress management since adrenals and brain are two of the target organs of Hg.
I realize this probably sounds like Science fiction. You might check out this discussion btw Dr Andy Cutler and Dr Dan Pompa who both had heavy metal related illnesses and got a lot better. They also describe some of the challenges they faced in getting diagnosed. http://www.healthcentersofthefuture.com/DrCutler/