it's real simple S - if you drink you'll be sick - dreadfully ill - for a week. We both know that.
This is crunch time - you've been through this often enough - this time work for a different outcome
You're thinking of drinking because you're an alcoholic and because your defenses are a bit down because you're tired.
Keep talking to us here...and find better ways to sleep. Drinking sleeps not that great - you always wake, full of dread and guilt in the pre dawn anyway - at least I did
D