Personally, I would not delay the exams until next year since you don't know if the depression is going to get better, stay the same, or get worse. Delaying may only make things worse. I would not delay meds either as you need them now. Again, a delay could make life worse for you. So, it sounds like choice one is the best. Just do the best you can. Work with the depression and try not to fight it or make it go away since it could make things worse. Right now for whatever reason the depression us a part of you. Accept this piece about yourself and perhaps go into therapy after your exams to better understand it. Good luck and do your best as that is all any of us can really do