William...good to hear you are doing better. I did not have the same surgery as you, but did have OHS about 6 weeks ago. I had pain in my right should blade that I believe was mostly due to my posture. It has gotten much better lately. I am trying to concentrate on my posture more and it seems to help alot.
Hopefully yours is something simple like posture but if not, the doctors will find it, fix it and you will be just fine. Remember, you have gotten through the hard part...recovery takes a while.
Keep us posted and know I am praying for your continued recovery.