I had postpartum depression 30 years ago. I experienced full recovery after 6 months without any meds. I do, however, think this experience left me with a fear of it ever coming back, i.e. fear of panic and anxiety.
About 10 years ago, I had some anxiety (which I now think was partially hormone related) but anyway, Doc put me on Citalopram, 10 mg/ I took it for a year with success, then up to 20mg for 6 years. It worked as I didn't have any panic attacks or severe anxiety during that time.