I agree about the fillings. I DO think they're not good for you but I don't think I'd run out and get them all removed if it's not covered by insurance.
However, if your mercury level is high, maybe there is a problem there -- it doesn't necessarily have to be caused by fillings. Even fish can be a culprit.
I don't know anything about the scale you spoke of but if you have it confirmed that it IS high, I believe there are detox programs for mercury. If you investigate the scale and any remedies, I'd be very interested to know what you learn.