I went to the Dr's yesterday and my pulse ox was 92. Seems very low to me. I don't smoke except for the occasional; very occasional cigar. I don't live in a household of smokers or in a workplace. The Dr. said any lower he would have to put me on oxygen. My lungs are perfect. Could this be a reason for some of the symptoms of fibro. I can lift weights and do weight bearing exercies. But when I try anything aerobic I have a flare and even have a fever? I don't get it but I know it must be related someway somehow. Any thoughts????