My biggest challenge on the depression end of things is anxiety and obsession, and Latuda has helped me a immensely with my anxiety. You may want to ask your pdoc about possibly trying Latuda or something that can help bipolar depression. If my depression and obsessive episodes get too bad, my pdoc will put me on an antidepressant for a while, until I start swinging into hypomania, and then he'll either back off the antidepressant or have me stop taking it. I would most definitely talk to my pdoc if I were you.
Diagnoses: Bipolar 2, OCD, GAD
Meds: Lithium, Trileptal, Latuda, Risperdal, Xanax XR and Xanax PRN