(((Kelly))). I agree with the others that you should get it checked out and find the root of the problem. Although the hug has become my constant, unwanted, companion, I don't discount other reasons for this.
If it is the MS hug, I often put my arms above my head to help relieve that hug feeling and I am able to take deeper breaths.
BTW- Why do they call it the hug? Hugs are supposed to be nice and make you feel good, warm, and fuzzy like this:

or

. I don't quite get that feeling with this.