As my sponsor used to say, "You're right where you are supposed to be."
Yeah, ticked me off when SHE said it, too.
This is what early sobriety is like. Sometimes it sucks--the way we feel, the fact that we KNOW there is a quick and easy way to feel better (temporarily, anyway) but that we can't have it.
All you have to know for now is to trust that it gets better with recovery. What else are you doing besides not drinking? I found it helped to go to an AA meeting every day, to read some recovery literature every day. No matter how sucky some parts of the day felt, I went to bed every night knowing I had fed my recovery.