I wanted to welcome to the HW chronic pain forum. My first suggestion would be to post on the IBS section of the Healing Well forum. It's easy to switch using the quick jump menu at the top of the page. Second, I think you need to have a serious talk with your doctor about possible options for you. I don't know a lot about IBS, but I do know stress makes it worse. I know you may not want to hear it, but managing stress becomes a critical part of life for everyone at some point, but for those of us with chronic pain and other chronic health conditions, it's critical. So you may need to make lifestyle adjustments you won't like, but that doens't mean you need to stop doing everything.
A woman named Belleruth Naparstek, LISW, produces a number of excellent relaxation and related CD's/MP3 downloads and she has one designed for IBS. I don't have any financial connection with her, so I think it's ok to say her website is healthjourneys.com. I would also recommend you consider going to a counselor or psychologist who specializes in chronic health conditions, and he/she could maybe help you assess your life and make a plan in conjunction with your doctors. Also, I know the forum frowns on putting your e-mail right in your post, as spammers can access it easily that way. You can put it in your profile, and people can e-mail you that way.
Hope this helps some. Please do try the IBS part of the forum. And remember we're not doctors, but can offer a lot of wonderful support and share our experiences.