CFS/Fibro/Hashimoto's thyroidits sufferer here. My docs don't want to agree so each one has dx'd something (though they all agree with the thyroid even though my levels are actually currently normal without supplementation)... but I do have the symptoms. The fibro pain is not bad, luckily, unless I do something stupid. Today is day 3 and the aches and pains are really kicking in... I am able to work mostly full time if I'm careful (though to the exclusion of much of anything else besides cuddling with my cats).