I don't want to say anything that will hurt you I do not have any personal experience with drinking while pregnant. However it is not written in stone that your child will be abnormal. I have seen babies born to women who drank that did have fetal alcohol syndrome and those that did not.
I want to encourage you to get help for your drinking now. Surely you will be able to take better care of yourself and the baby if you get help to quit drinking. You can do that anytime you are ready....