Hi there, I'm posting this before viewing all other posts. The pain you feel is most likely Gas. There is, belive it or not different kinds of gas. You can try gas-x like pleanty of other people have already told you, but it realy dosen't work on this type of gas. It just helps your mind be happy because you took a pill, so when it comes back you think it could have been worse if you didn't take the med. Get it? The best thing's to try, (because all our bodys react diff) Is useing the breathing aperatice the respitory therapist gave you. If you didn't get one then just take deep, deep breathes about 5x or so every 45min. (this will hurt you shoulder, but it is moving the gas in your syatem). Burp as mush as you can. Drink any kind of non caffine Ginger tea. Walk as much as you can, just up and down the hall will help. I'm not going to lie it will be painfull for awhile. But it will lesson as time go's on. Good luck! Sorry I am a terrible speller