It takes a while, i only just feeling better a couple of weeks ago and its been over 7 mths for me. The body dumps mercury from the organs, etc into the blood after removal so i read. Youve turned off the mercury tap by getting the amalgam out but its in your body and you have to get it out.
I only got a rubber dam for protection, i did mine gradually and after each visit i went home and washed my cloths and showered and washed my hair about 5 times incase there was mercury lingering about.