I should probably add also that depression is a very treatable illness, so you have much to look forward to in various methods and types of treatment, including some that are related to lack of enzymes in the stomach that require a folate supplement which can cross the blood-brain barrier to supply folate to the brain. (It helps with serotonin production--the feel-good neurotransmitter.)
See
DeplinĀ® (L-methylfolate) | Official Site for more information about that one. Even a few med-resistent patients have responded to it. I take 15 mg once daily and value it almost as much as the Omega 3 fatty acids for improvement in feeling tone in depression.
Take care of yourself and get pro-active in your care, please.