Sorry to see that you're experiencing this, Day. It does sound like nerve/muscle spazzes and/or the hug to me too. The hug does not always bother your breathing, sometimes it's in a smaller spot, or a few spots.

I also feel like I'm bruised all over sometimes. It isn't unique to when I'm having the hug, and I don't always get that with the hug. Isn't this disease a hoot?

Feel better soon.