need some suggestions!!

I plan on starting a juice fast this week. the only concern I have is that I think I may have a candida problem or high levels of mercury (i have a lot of silver almagam fillings). I plan on drinking mainly green juices. I was wondering if it would be a good idea to even do this fast if I think I may have candida overgrowth? Does anyone on this forum have problems with candida? if so, what would be benefial to take while on the juice fast? I intially was planning on doing a parasite cleanse while on the fast then a Liver Flush after. also, I've read that it isn't good to fast if you have mercury toxicity. I plan on seeing a doctor about all of this I am just without health insurance right now. I wanted to do the fast now to start the cleansing process...I just dont want to do something that is going to make my condition worse. Any suggestions would be greatly appreciated!! thanks!