I am 44yr old Female and For months I haven’t been able to lift my arm above my shoulder and was suffering pain throughout upper and lower muscles of my left arm… I can’t put any weight on it and have ruled out rotator cuff…. steroid injection and physio, ibruprohen and anti inflamatories no effect it is getting worse to the point pain occurs without movement and is enough to take my breath away, also recently noticed swelling to the left of my left breast and my under arm is tender..