jcostie
                    
                    
                    
                    
                    
                    
                    
                        
                        
                        My fourteen year old daughter had the same problem.  It turns out that her tonsils had become enlarged and pitted.  Decaying matter was lodging in the pits of her tonsils.  Sometimes it was visable and sometimes not.  We had her tonsils removed and it solved the problem.