For your case, you should not just rely on the medicine and doctors, I suggest. There are thousand of the reason that make you depress in fact. But you are the only one knowing well the truth why you come to this.
Play more sports and less thinking of something unreal or passed.
Take some normal & standard multi-vitamin and fresh fruits and sleep well everyday. Listen some light music before you get to bed.
Try to appreciate more to what you can see and what you can have in your living. Thanks to your God too.
You have to help yourself. It is not a very difficult task at all but need to take some time. Be patient for it.
It is really workable and I am recovering almost 90%.