Hi Flare. Welcome to Psych Central. I am sorry you feel you are dealing with depression, but it seems you have been through traumas so that can often crop up after trauma.

I am guessing that your talk therapist cannot prescribe meds and feels you need more than talk therapy. Different people respond differently to different therapies so it would not be a surprise if other treatments were prescribed by a psychiatrist.

These may be of interest

Depression: Symptoms, Types & Treatments | Psych Central

this is multiple links to depression articles Living with Depression: A Guide for Coping with Depressive Feelings | Psych Central

Dealing with Depression-Related Stigma