Oh my God, yes, you have to have Fibro to understand how terrible it really is.  I have so much guilt that i carry around these days...my mother has had fibro for many years, and of course I did not believe or realize what pain she was in.  Then it happened to me a year and a half ago.  Wonder if it was because I did not treat her better, or try to understand what she was going thru a little bit more.  Well, now I know.  Boy, do I know.