I am praying for you. For what it is worth, about 4 months ago pretty much the same thing played out for me. First I told my best friend, then I told my husband. They were both very supportative. They were hurt because I lied to them and they were scared for me.
I think AA is a great idea. I went to an AA meeting the morning after I told them I was an alcoholic. It surprises me that there are not any day meetings. Are you in a small town? Maybe try calling the local AA number. I have found that the AA website leaves something to be desired in regard to current and accurate meeting information.
I hope and pray for the best. Think about today. Tomorrow will come and then you can think about it. Try not to stress out about the "what ifs".