Since Mark mentioned it, have you read the web site section on Candida, or oral complications? It isn't always painful unless well developed, and is white in color. A very simple test to see if it is Candida (thrush) is to drag your finger nail across it. The white will come off. This isn't going to make it go away, just tell you what it likely is. You are going to need an Rx for Diflucan to get rid of it...about 7 days for a low grade case of Candida, one pill per day. You may have residual mucositis and for that right now most trreatments are acting on the symptoms and not the underlying problem. It has to run its course, but there is something to be said for relief of the discomfort.