It sounds to me from the way you were describing yourself that you already know you may have some serious issues with alcohol. Blackouts don't happen because you are a social drinker. When you vomit your body is trying to tell you something.Listen to people who have been there.It only gets worse. I hope that you consider talking to someone who can be objective. Our friends mean well but they are one of our biggest enablers. But I think the fact that you came to this site was a way of reaching out. There is a lot of support here!