Chelation - Glutathione & B12 Nebulizer

Hi - I still have amalgams, but my Environmental MD has prescribed me a nebulizer to use Glutathione and B-12 (together). I did my first one yesterday and this morning I feel as though I've been hit by a truck. I can hardly move my neck. Is this just because my FM is particularly bad today or is there someone who can give me some information on what I am experiencing? I know there are some good properties to this and I want to continue, but I just need to be sure that I am not doing something that is worse for myself. I plan to have my Amalgams removed, but in the meantime I'd like to get some of this mercury and other toxins out of my system.

Thanks