I am now having pain under my shoulder blades, in the middle of my back....which goes into my chest area...also pain in my rotary cuff of arms, and elbows...it feels like I have pulled muscles all in my back and chest....as the day goes on it hurts worse and worse...Using my oxygen does help the pain...but I don't know if it is coming from my lungs....or if it just real bad muscular pain...anyone have any suggestions...I do not if it does not stop...I am going to my lung doctor...Thanks