i started taking Cymbalta about 2 months ago for Fibromyalgia pain. before taking it, i was not depressed, just in pain. i was pleasantly surprised at the amount of pain relief it has given, and lack of side-effects (that all the others gave). but, i've noticed that my mood has changed. i don't know if i want to say i feel depressed... just very, Blah. i feel emotionless, and not very happy, like i was. can anti-depressents cause this feeling?