Big Slice+Big Break=Nasty Hook?

[DaSportsGuy]

Ever since I took up golfing this May, I've had a pretty good size slice with my driver, and woods. All my other clubs I can hit straight for the most part with a slight fade. I've found that when I take any more than a week and a half without playing, my next couple rounds I can't hit anything straight. Every club I hit either has a wicked hook or occasionally I'll put a good cut on a club and will hit it well, but I'm still hitting a draw compared to a nasty slice that I've always had. I'd much rather have a draw than a slice because a draw doesn't take as much distance away from me as a slice does, but when I take a break for any more than 10 or so days you wouldn't be how much of a nose dive almost every one of my shots take.

Does anyone have any idea what could be happening in my time off?