Serious question for any nurses or doctors on here.

La

I was prescribed Amitriptyline by my doctor. I have been taking Cymbalta for almost a year. everything I have read says you shouldn't mix the two. I take Cymbalta for my nerve pain which is very helpful but doesn't help sith my depression. I take the other for sleep because i dont sleep I canr fall asleep ob my own. Do I take them both or should I talk to a pharmicst and tell ask them???