Sorry to hear you are both under a lot of stress from this.
@orchid - I used to also suffer from IBS symptoms as well a few years back - bloating, pain, gas, etc. It seems to have slowed quite a bit.
From what I've read there seems to be a correlation between GERD and IBS and many do have symptoms of both at times.
I have found in the past the best measure that helped me deal with stress was exercise, cardio - anything to get out and release those endorphins - always made me feel better and sleep better, even if it's just a brisk walk for 30 minutes.