welcome thedude - 4 days used to be the cycle for me too, when I started feeling really good. There's research that they've done on what alcohol does to the body (brain, blood sugar, liver, nervous system, etc) and there's reasons for that "vicious cycle" we get in to.
Glad you're here- everyone here knows what it's like (and how hard it is) to deal with our drinking. Keep posting and reading! You really can do this!