i have trouble speaking up to my psychiatrist/mental health team
i try to take notes and be straight forward with what i want to say
being honest and open with your doc is good

on the issue of needing something else, what exactly do you feel that you want to "treat" ?
just remnants of depression? anxiety? mania?

if its a bit of depression i would give it a little while longer while your body adjusts to the new dose of cymbalta and if you still feel off explore more options with your doc anyway