Hi Mark
Just read through your symptoms again and MAN do I identify. My nausea doesn't seem to be as big an item as yours but the overall symptom list reads like my own.
Here's some of my thoughts.
There are some treatments you've tried and given up almost immediately due to negative reactions. You know this but I'm going to say it anyways. Die off....many of the cures for these issues come with a die off reaction and if you stop too soon...it doesn't work. I understand that if you're feeling close to your limit then a die off reaction is not tolerable BUT...ask yourself why you felt so sick....that in itself might be a clue as to your issue...why did liver supplements make you ill? Go through your list and try to figure that out. Is it a common reaction?
Have you kept a journal? I have a tough time with this one....fricken notes on everything from napkins to receipts then I loose them, but I have a sense of the importance....there may be a connection between something I do or eat and how I feel and it may be a few days removed from the event OR it may be something so innocuous.....so 'under the wire' that I miss it.
You haven't tryed a candida cleanse? I'm a skeptic on this one because it seems to me that if I had an candida overgrowth and candida is an immune suppressant then I should get worse and worse until I turn into a dough ball...yes? BUT...I have seen people close to me...people I respect make dramatic improvements (one pulled out of MS so severe she wasn't expected to survive). I may not understand it but....It's the next thing I'm going to try (following 'The Candida Cure' by Anne Boroch as well as others....Dr E Cranton -Rainier Clinic, Dr Tietelbaum, as well as Dr Susan Myhill (love her site!!!))....a mix of diet and antifungals (diflucan and nystatin with a natural antifungal mix; walnut, oregano, etc.) I'll post how that goes when I have something to report.
Have you been tested for worms? Many labs miss them unless they look specifically for them...especially tape worms. They can lie undetected for years and slowly reek havoc on your intestinal flora and immune system. Best would be a worm kill protocol (not OTC roundworm meds....you need a prescription for tapeworm meds). Might be worth just doing a round....can't be any worse than Jackie's Rx.
Your comments about the feeling of vulnerability...of worrying about where this is all going...having a breakdown. For me that's almost the worst part...no one in my life really understands...the tests are all normal, I look fairly healthy and I live like a monk. It's like a hangover that never ends. Scary.