I have noticed that when I withdraw from my anti-depressant (usually because I have to wait to refill the prescription) there comes a day where I feel particularly well.

I don't view this as an indication I don't have depression, but rather that my body has attained a "sweet spot" so to speak in peak medication level effectiveness. A day or so later I start feeling the withdrawal.

I am not surprised that you feel better now. I think, however, you need to tell your doctor(s), all of them, that you have stopped your medications.