What is your diet like? Other stresses? What detox protocols have you utilized now that you have eradicated mercury sources from within your body? I
You may want to get some testing paper to test your saliva and urine to see your ph level...that is a great indicator but is always brought back in line with proper eating.
FOr mercury detox consider a far infrared suana...proper diet (Raw Vegan with copious wheatgrass)) and magnetic clay baths.