Some very good suggestions- I am going to try icing and Aleve and see how far that gets me- and just stick with walking for excercise for now, although I did stick my bike on a trainer and may just pedal sitting upright and see if that works. I found I can sleep relatively comfortably if I put my arms above my head- while that's not exactly the best sleeping position ever (cold hands!), it appears to let me breathe easier.

Fortunately, I'm spending the next two days volunteering at two different PT clinics- and one of the PT's will have a look at it and see if there is anything they can suggest for me. I'm really hoping no subluxation is involved. Thanks so much for the word-of-mouth referrals- I will check and see if my insurance covers those folks!