For several years I've alternated with constipation and diarrhea. I also have been diagnosed with fibromyalgia. I'm 67. Every once in a while, either constipation or diarrhea would be a problem. The last few months, I've had increasing abdominal pain which is resolved when I have a bowel movement. Once that has occurred, the diarrhea begins. Earlier this week things were much worse than I've ever experienced. The pain started when I was at work. I am a substitute clerk for the county library system. The pain started as bad and went up from there to where I thought I would pass out. Finally I was able to have a bowel movement and that seemed to resolve the pain slightly. I told the supervisor and left to drive home -- a 15 minute drive that I know by heart. When i got out of the car at home. diarrhea started and I couldn't stop it. When I made it to the bathroom, I had a mess in my pants and down my legs. It was so very embarrassing even though my son, who lives with me, took it in stride -- he's a pharmacy tech and has done a lot of research on IBS and fibro. I got myself cleaned up -- a shower was required -- and put on a nightgown. All I wanted to do was get to my bed. There was some more diarrhea during the night but not in the quantity that I had before.I slept most of the day yesterday and am still feeling rotten -- very tired -- almost a fibro flare feeling. I really don't want to go back and work my scheduled hours tonight. Has anyone had IBS affect their fibro that way -- aching, extremely tired -- for a couple of days? I've read alot of information about IBS but haven't seen anything so far on the effect of IBS on fibro and the effect of fibro on IBS. Can someone point out some sources?Sorry if this is disjointed -- it's hard to make sense today.