I am glad you finally got something for pain. I have been dealing with a bad shoulder for a while too and my doctor said because I couldn't raise my elbow more that half way that it was bursitis. She gave me a shot and it is feeling a little better. You can also have trigger points all along the muscle on top of your shoulder and if these are adding to the pain you can try heat and massage. Hope you start feeling better soon!!
I am with Shirley on the xrays! I have had so many of my shoulders, hips and hands and nothing ever shows up!