Oh dear Twinkl please be careful with chelation therapy!! I agree its a good idea to get the fillings out, but I know so many people who have truly been damaged by forced chelation. Remember, in our cases its slow and steady. We don't handle purges and detoxes like most do. Would hate to see you go through that kind of suffering :(
I know Mikey (wiredgeneration) had his removed but he really didn't notice much of a difference in his overall health afterwards. I'm sure it didn't hurt though.
Do a google search in your area for biological dentist, and make sure they have a good reputation and alot of experience. Mercury removal isn't something to mess around with :)