Kell come and read on the TOS forum- it really sounds like scalene or SCM muscle spasms. We have threads and info on that.
do you also have any choking feelings or like your collarbone is being pulled into your throat?
some links on topic-
http://neurotalk.psychcentral.com/sh...ad.php?t=12212
http://neurotalk.psychcentral.com/sh...ad.php?t=12415
http://neurotalk.psychcentral.com/sh...ghlight=spasms
http://neurotalk.psychcentral.com/sh...7392#post67392