I was wondering the same thing as Dee: did you ever go to see the counselor?
Those 3 days weren't a waste and you should feel good about making your first attempt to get sober. Make a game out of finding things to be positive about - be open to solutions. Each day that you don't use is money in the bank to get help for your depression.
I've had depression too, so I know how it is when every thought seems negative, but the more you dwell on them, the bigger they grow. Taking some action will really help.