+++1 on seeing a therapist. Even though most people in the US get antidepressants from their pcps, they are not often the best person to get help from for emotional issues. See a licensed mental health counselor, licensed social worker, or a psychologist. Someone who has experience with PTSD and depression. If you need the meds, they will have a relationship with a prescribing psychiatrist or psychiatric nurse practitioner who can prescribe.
Can you walk? Do water aerobics?

PM me, if you want.