I am 3 weeks out from my IVIG (usually get it every 2, but holidays make scheduling a little harder I guess! ick).. I am sooo short of breath by the end of the day and it really does cause some pretty darn good chest pain.. Yall have this?? It's just like an elephant sitting on my chests, or like my abs (which are also weak) are detaching from my lower part of my ribs (i had that sensation when pregnant - ouch).. anyhow. now that I am sitting down resting from my day it is better but , it is so anxiety provoking to not be able to breath well!!!