I just started taking Tramadol today. My doctor prescribed it to treat my Fibromyalgia. I had been taking Vicodin but he changed it to Tramadol b/c the vicodin was giving me withdrawals if I went too long without taking it. So far I don't feel any pain relief but I do have a bunch of new side effects... nausea, headache, brain buzzing, light headed, loose bowels, burning hot, extremely cold, etc. Basically an overall feeling like I have the flu. This makes me want to stop taking it right away! Has anyone else experienced this & if so, did the side effects go away? Should I give it more time to see if my body gets used to it?