You know, if you're on a fast which consists of mostly OJ and you're suffering from candidias, you may be causing your problem to get worse. (I don't know if the citrus you referred to was OJ) Candidias resides in the intestines, as well as other places and it is fed by many things, including OJ.
There are juicers out there for 60.00 that work just fine. Might be a good idea, if you think candidias might be an issue.
I also don't know what Dr. Natura is or how you're able to have BM. BM stops during a fast because of lack of digestion. What are you taking?