You may or may not have mercury poisoning (it sounds like you don't), but the fillings certainly won't help you in the long term.
You should however check for other heavy metal toxicity and have a hair analysis done and interpreted by a naturopath. Mercury hides but other heavy metals should be shown in your hair.
Before doing chelation, you have to remove all metals from your mouth though, so your time looking into Amalgam removal isn't wasted.