Bex, have you tried taking a betain HCL supplement, or using plenty of cayenne powder on your food(which increases stomach acid)? Imo your problem is probably poor digestion(in addition to mercury toxicity). If you digestion isn't working properly(you talk about bloating, pain , and gas) then you won't be adequately absorbing minerals and vitamins. You can search the net for dysbiosis and see what they suggest. My opinion is herbs such as garlic, cayenne, ginger and peppermint may be a great help.