I am 52/f. I have severe pvd, high b/p controlled with medication. I have this tightness/burning in front of throat, about where collar bones meet. Usually on exertion, but not all the time. It goes into my left chest and arm. It is like sucking in cold air. I had a heart cath and all is fine. I do not have symptoms of heart burn or GERD because it has nothing to do with food and I do not feel anykind of reflux. I have had thyroid inflammation before, but on last bld work all was normal. Any ideas?