Remove the last two amalgums. You might feel worse temporarily, but in the long term it will be beneficial. Perhaps a few months after that you might start on low dose DMSA? Blood tests for mercury are unreliable. The way to test is to measure excretion of mercury before taking a chelating agent anfter taking it.

I still have perhaps around a dozen mercury fillings. I have had 7 already replaced. I felt very naseous the day after the most recent three were replaced. I am waiting until I feel better to have more replaced. My dentist is not a holistic dentist. He wants to replace many of my mercury filling since they are 20-35 years old and the margins are starting to separate. I already needed one root canal due to decay under a filling.