I was diagnosed with fibromyalgia a year ago. I know I've had it for at least five years, if not longer. My question is: even though I can feel most of the tender points (and can't deny I have FM), most of my other discomforts come other sources. Pain? arthritis - in my spine, in my knees. Fatigue? dehydration, insomnia. Constipation? Pain & antidepressant medications. Five years ago (coincidence?) I had a total knee replacement. I was one of the 5% that wasn't successful. The spacer used was too large leaving my knee unstable. I've been wearing a knee brace ever since. As a result, my posture is the pits. Because I favor my right knee, I'm sure my back is taking the brunt of the imbalance. Okay, to make a long story short, how can my symptoms come from FM when I can point to other things that can also cause them? Am I simply in denial? This is all so confusing!!