Glea, I wonder if the IBS is related to the fibromyalgia flares? Do you think you might be lactose intolerant? Do you take probiotics? Those often help IBS sufferers. Get some good strong ones at the health food store. They aren't cheap but well worth it. Kefir is also good for IBS.
Some of my meds cause some stomach issues, like gas and d-) The combination of plaquenil and metformin are rough on my stomach at times. I really hate it too. Gives me gas and I don't sleep well when I have gas. Now, I take the meds with lunch so the gas is over with by the time I go to bed.
Sleep is too precious to miss!!!!!