Grace
                    
                    
                    
                    
                    
                    
                    
                        
                        
                        I have more of a definite sensitivity under my right armpit than swelling, cannot shave daily right now and a   pain in my right shoulder and arm, not sure if it is related.  I also do not know the cause, but was surprised someone  had very similar symptoms.  If i find anything out will let you know, have not been to see a Dr as yet.