I have it too. But I guess I am lucky, mine does not seem as bad as some of you describe. I was diagnosed in about 1991 but I now know I had it years before that. Now a lot of things are blamed on old age but I know some of them are from the fibro. I had IBS until I started taking Effexor, one of the side effects was constipation and it balanced out.
The thing that lead to my getting diagnosed was a pain in my upper left arm that went on for two years and thru two drs. It felt as if someone had frogged (remember as a kid, someone would hit your arm with a fist with the knuckle on the middle finger stuck out. I went thru every test in the book and one day the Dr started pressing on my arm and other places and it hurt.
A fe years ago, a Dr. told me that there were some studies that linked it to lack of sleep and stress. I believe my first symptoms started after I had children.