Hello. I have right shoulder blade pain, ongoing for over 6 hours. The pain is just inside the shoulder blade area. I would label it mild to moderate. If I move my arm, cough or breath deeply, it worsens. I am in the middle of investigating a couple of health issue possibilities - testing for lung cancer, due to a lung nodule and I just had an echo-cardiagram because of strange back pain last week, spinal, very sharp. Awaiting test results now on those things. Just trying to decide whether to take myself to the ER over this shoulder pain or take a wait - see approach.