Had that happen many years ago. Woke up one morning and couldn't lift my arm, my shoulder was hurtin' so bad. Went to the doc and got a cortizone shot, next day it was fine. I haven't had that pain since.
Good luck Larry, pain hurts...
I will second the choice of stretching, heat and ibuprofin (up to 800mg).
I had a case of sciatica a few years back that made walking next to impossible. It took a few weks for it to subside, but the heat and pills helped a whole lot.
On the lighter side, if you go for the message route, opt for the "happy ending" if possible. That will definitely take your mind off the pain.