after stopping Cymbalta after 3 years... noticed i have pain in my upper arms (both) worse at night and first thing in the morning. i had stopped the Cymbalta on my own... had no pain when i was on it and this is the only thing i have changed... my question is can Cymbalta cause this kind of pain when off of it? I cannot sleep at night cause my arms hurt so bad... first thing in the morning even lifting a coffee cup hurts... I was taking 90 mg. at night only...