Your problems sound like many of the ones I had. If you have gotten rid of your mercury fillings, then the only thing left to do is start chelating, slowly.
Get yourself some DMSA, ALA, and chlorella and start with the Cutler Protocol slow. After a year or so of chelating with those on and off, I recommend adding DMPS and cilantro as well.
In the short term, try apple cider vinegar for the rosacea on your nose. When I was at my worst, I had rosacea over my entire face, and ACV applied with a cotton ball cleared it up.