I have been having pain throughout my left shoulder blade , it s particularly much more painfull as the day passes, it has been there for 4 days now and painkillers only ease for a little while, I also struggle to take a deep breath at times and coughing will send pain also, I suffered from a phnuemothrax last year but only a small partial area in the top left side , has this returned or is it something much less serious , I do not want to go to a&e if it is nothing to worry about