Cindy
                    
                    
                    
                    
                    
                    
                    
                        
                        
                        I used to get canker sores all the time.  I even went to an allergy doctor.  This didn't help.  Try to get a prescription called Negatan (45%) from your dentist.  This medicine really works.  It is a red dye that you put onto each canker sore.  Within a day or two they are gone.