While waiting for the MRA , start searching for some names of really good physical therapy people, body workers, therapeutic massage, myofascial release, osteopathic drs or chiropractors.

any or a mix of those will probable be what you need unless something specific {surgical} shows in the MRA. {all must be very good and knowledgeable about soft tissue problems and work with you - no cookie cutter rehab plan}

The collar bone thing sounds almost like a severe dislocation/subluxation of some sort.
could you be hypermobile?

Useful info-
http://neurotalk.psychcentral.com/thread84.html
post #1 has hypermobile info link in it.

dr & PTs listings-
http://neurotalk.psychcentral.com/thread135.html