Kjell,
That's how I got my DUI, a month and a bit sober, and then one day of drinking... I ended up lost again for a year. The guilt and the confusion and why did I drink... I don't recommend it.
From the sounds of your post, I'd suggest rehab too... might could give you some tools to actually live in sobriety, which turns out to be the hard part, instead of just not drinking...
-TB