Welcome, and I'm sorry for your situation and how scary it must be. I'm glad that the accident was not worse.
My suggestion would be to get a lawyer as soon as possible to help yourself get through this. Maybe if you talk to a lawyer, it will begin to make things seem a little bit more manageable.
I'm glad to hear that you never want to drink again. That is the most important thing here, and hopefully you will begin your sober life now.