I have paradoxical reactions to medications especially if they have synthetic fillers... keep this term in mind if you take a medicine again and it has the reverse reaction.
Good for you! God made this body to heal itself.... and our minds need to tell our brains to do that (the brain has no opinion or action on it's own, but operates by what our mind tells it through our thoughts and words.
There are many good authors promoting this intensely now... my favorite is Dr Caroline Leaf-- her books are awesome as she writes as a scientist on a layman's level of comprehension. (Martin Seligman PhD has been doing studies for eons about positive psychology and it's healing effects.)

be sure your MD knows you are off the medications and keep him/her informed of your progress. I think you're on a good track. Remember, you will have set backs of a day or so where you fall down but keep with the positive thoughts of how good you feel now, and you'll climb out more quickly each time.