You are doing well Newfella. If you were going to go into withdrawals I think it would of happened by now. Yes I know you feel awful but unfortunately that is to be expected. Don't fight it, accept it.
As I sobered up all the feelings I had been numbing came flooding in and like you I didn't know myself. The one thing I was sure of was that I was proud of my accomplishment. It was/is something I had to fight hard to achieve.
Keep writing here or join the November class or better still do both. Once you want it enough it is achievable.
Well done you!