It's good to hear you have found someone who you think can help. The next time you see him ask him to check if the infection he noted in your mouth could also be Oral hairy Leukoplakia. It's very easy to confuse with Candida. Often it is regarded as harmless or symptomatic of a compromised immune system such as the run down condition seen in HIV. All it is really is the only physical manifestation of Epstein-Barr virus. If you ever were diagnosed with Glandular fever then it would certainly be a genuine chance that the coating on your tongue is OHL rather than Candida. It is not well understood. This website has a very basic description - posting.php?mode=reply&f=1&t=20853
You may quite possibly have both infections and each require a different treatment. I have written about my own experience with this under the Regime topic Avonex and Valtrex.