A lot of us alcoholics self medicated our anxiety. The irony is alcohol makes anxiety 100 times worse! It's one big vicious cycle that worsens over time. Quitting alcohol will eliminate this vicious cycle. It did for me and I was a total anxious mess before quitting.
The fatigue could be the crashing from the caffeine pills. It's always best to check this out with your Dr to ensure nothing else is going on.