Welcome to SR, trust me you are not alone in what you are going through. First thing first, please see a doctor and be totally honest about how much you drink, how often you drink, how long you have drank, and what happens to you when you drink.
Tell the doc you want to quit and foolow thier advice.
Detoxing from alcohol kills people all the time, that is why medical detox is crucial for some of us.
Good luck, hang in there, keep doing the next right thing and things will get better.