I'm sure your family cares, but in a way they feel more helpless than you and I do understand why you want to be left alone. When it's that far gone we believe we have only one friend - booze. "WRONG". It's not a friend, it's like a georgeous lover that keeps cheating on us and we still go back for more. You have done it before, you can do it again. If you can't wait until your appointment, please go to any ER for help. They will help to detox you and you will think more clearly. A drink won't - it will make you feel 100times worse when you wake up. Been there, done that like probably most of us. Otherwise stay online and keep posting and reading.
Stay strong.