This is indicative of heavy metal toxicity and the proteolytics could be breaking down Candida biofilms and thus uncovering metals. This is a rare exception, but take 3 Medi Clay pills away from food before bed starting today. You can always order more if you run out (http://www.gutthrivein5.com/mediclay), but it's important to get a jump start on the metals. I suggest you further help chelate out thermals with a good quality chlorella at 1500mg twice daily (with or without food is fine). See how you go with that and reduce the proteolytics until the metal taste subsides. Do not proceed to the Pathogen purge until the metal taste subsides.

Some resources for chlorella if in the States--

Otherwise search your local health food or vitamin store.