I drank for about twenty years, maybe two cases of beer a week. After I stopped cold turkey, I had sweating, shakes and insomnia for about ten days – if I managed to sleep, I had very vivid nightmares. After that I was very, very tired for about a month or a month and a half, even though I slept a lot, and I do mean a lot.
Everyone's different, though. Good luck to you, fairydustsienna.