It sounds like you may have some chronic infection, which could also involve your lymph nodes. Either way, while we would all like to help you here, the only real answer you are going to get is from another doctor who not only looks carefully at your mouth and throat, but takes swabs, does blood work, and if warrented uses other, perhaps imaging techniques to determine what's what. You need to get in to see someone. Regardless of bacterial or viral infections or the big C, you need an answer so that this can be resolved. We are unique individuals and your symptoms may or may not minic those of another persons disease. Even with similar symptoms, you could have very different causes.