I can relate. I am also a caregiver and am going through a bad depressive episode. I think it is situational, although I think in my case it might also be tied to my meds. My moods seem to stay on the depressive side anyway. Maybe you can consider changing docs if you are unhappy with the one you have. It may or may not have to do with your meds. I think with your caregiving responsibilites having situational depression is expected.