You are the 3rd recent member with a long transverse process of C7..
here are the others - http://neurotalk.psychcentral.com/thread151595.html
http://neurotalk.psychcentral.com/thread151610.html

some of the same info should be helpful for you.

Often long term TOS can or will spread to feet or legs , but most likely due to myofascial pain if no other cause is found. Or it could be a spinal issue or another condition.
If you ever had a hit, fall or other jarring of the spine a expert evaluation by a chiropractor or advanced PT person, is a good thing, just to be sure all is in good alignment.

What brought your pain & symptoms on?
The Nov plane flight? or did you have problems before then?
Any desk/ computer work, car accident, sports?


[Feeling that there is something in my throat
Feeling of pressure on R collar bone area
Pain in R collar bone area]
these are exactly what I had during and after my severe spasms - for me it was my top rib, it had gotten pulled up from the spasms and had stayed stuck up like that even after my chiro had gotten rid of the spasms. It also crowds the collarbone /top rib area even more so symptoms are more limiting and arm fatigue sets in faster.

my suggestion - get the spasms resolved by an expert PT or DC and then have them drop/mobilize your top rib back into place.
It was amazing to me when the adv PT guy did this simple maneuver on my top ribs.
It may take more than one time for them to stay down, esp if your spams return.
If you are hyper mobile things can go out of place quite easily, so be aware of that.

Severe spasms will even seem like a heart attack feeling and affect the inter coastal rib muscles which affects the breathing.
scary feeling.. been there.

Has your PT done any manual trigger point work?
Are they focusing on pain& symptom reducing first?? - before any strengthening or resistance work?

other things
posture
blood work up for other causes - thyroid, diabetes etc
nutrition - maybe a good multi vitamin, MSM, Cal/Mag
fluids to keeps body lubricated
proper breathing form the diaphragm