I was diagnosed with TOS two years ago. I do get chest pain. I have been told that this is caused by the ribs coming out of place. My physician tries to get all the ribs back in place by cracking my back, neck, rotating my arms, etc. Sometimes it helps and I feel good for about a week or two and then it gets shifted out of place again. I hope this helps you. Its not a permanent solution but even if it helps you deal with the pain for a few days, I believe it is worth it. I will pray for you. Good luck!