You drank about like I drank, and I can tell you from recent personal experiences the withdrawals are as dangerous as they are unpleasant. Please, please, go to a doctor/ER. This should be carried out under medical supervision, even if it is done at home.
I don't think AA would discriminate against you for age, but like Bdiddy said, right now you need to worry about the detox--the rest can come later.
Take care,
-TB