Approx 6 months ago I had a shoulder surgery to repair a tear in the bicep muscle at the rotator cuff, as well as stabilization and shaving down the clavicle to allow better movement. I seem to have developed a hard lump on the end of my clavicle, at the shoulder where it was shaved. It is visible to everyone, and does not match my other shoulder/clavicle area. I am also experiencing some aching and burning sensation in the same area, as well as in muy delt and down my bicep, its minor, but nagging. I am concerned. Any idea what may be going on?