I chose to hold off on chelation until my liver was properly unclogged and functioning with free flowing bile. Have you done liver flushing? It works, providing you do adequate preparation.
When I took DMSA I killed off intestinal candida. I believe I also killed off liver candida from the biliary network and this then reclogged my liver, which I will have to continue flushing. I did get out bright yellow bile-stained candida a week after my failed 8th liver flush.