Let us know if you find out anything from your appt today.

If nothing needing any surgical intervention is found - I hope they do rx some therapeutic PT for you { for pain relief- Ultrasound, IF stim, heat, LLLT, massage etc}
You could have some nasty trigger points {knots} that need a pro to work on.

But if this continues in the same way with no relief I would really think about getting a second opinion from another TOS doc.

I know it's very hard to do, but trying to de stress and relax as much as you can does help a little bit.
When you get tense and angry your whole body tenses up and your breathing gets shallow. That is the opposite of what you need to aim for.
Relaxation with deep diaphragmatic breathing - gets max oxygen in and a complete exhale gets rid of the toxic air
slow and rhythmic maybe listen to some slow calming music

here's some online sounds that you can set to which ever helps you best-
http://www.soundsleeping.com/