1) Stop drinking and get into rehab. "without knowing what I was doing, I drank too much" is indicative of a larger problem, and it will just get worse if you don't get it fixed now.
2) Get yourself in to see an attorney ASAP. You're in hot water up to your eyebrows, and strangers on the internet are not going to be able to offer you any predictions about the outcome of your situation. You need the assistance of a pro.

