As someone who has meditated for 2 years anywhere from 1-5hrs/day, (so still a newbie), I always go to Pema Chodron when I am confused and she would say this: Why do we meditate? we do not meditate to feel good (shockwaves) if the purpose of meditation was to feel good, most of us would feel we were doing it wrong most of the time!! The purpose it not to feel bad, however, you’ll be glad to know, but rather an open, attentive, compassionate attitude to whatever is going on. Like a big sky, allowing alot of room, for anything to arise, dwell and pass away. Good and comfortable and pleasing and difficult, painful and unwanted, all of this… So the essence is training in something pretty radical and not the habitual pattern of the species, and that is to stay with ourselves no matter what is happening, without putting on top of it good and bad, right and wrong, pure and impure. So if meditation was about just about feeling good, I think all of us secretly hope that is what it is about!! Therefore a very common experience of the meditator is in a typical day when your feeling bored, restless, when your mind is hurting, you feel like you must be doing it wrong, because it is a difficult experience, so that is the main thing to keep in mind!! It is not about feeling good it is about a compassionate openness, or an ability to be with oneself and one’s situation through all kinds of experience. So whatever life presents you with, you are open to that and this is pretty radical!! To this I would add it sounds like you came to meditation with the goal that it would help with your depression, there are no goals in meditation, it is what it is.  So to ask is this good or bad is dualistic thinking, and a form of judging, because of your goal…. I know this was deep, but I hope it helps, my advice is stick with it, it takes a lot of courage to spend time with oneself!!!! Good Luck!