I have SLE and i have been having bad muscle achs and weakness from the waste down. At first we thought that it was a flare from the lupus but after a high dose of steroids and no improvment my doctor gave me Cymbalta so see if this will help relieve the pain. Did anyone else take this for fibromyalgia, if so how long before you at least felt some sort of improvment? What does fibromyalgia feel like?