Hello, Thanks for posting on HCM, It is possible that oral candidiasis is the culprit but by physically examining your tongue the doctor should be able to see the lesions as they are hardly unnoticeable. I think you might rather be having viral GI infection which could affect your tongue, oesophagus, stomach etc and present with symptoms of heartburn. Advair Diskus can cause adverse effect of oral candidiasis and viral GI infection. Those two possibilities are likely. I feel you should consider stopping advair diskus and consider taking another alternative. You might require antiviral treatment such as acyclovir to get rid of this infection and also mouth was solutions. Spaying advair diskus and rinsing your mouth each time does not mean that part of it did not stick to your mouth or gut. Just as a precaution, your doctor can initiate treatment with antifungal agent. Hope this helps