Liver Problem?

I am off cycle, have been for about 10 months now and it's the school year and im up at UW Madison, so of course I like to and im going to party. Recently in the past 2 months every morning after I've been drinking heavily I've had the same experience. I wake up natious, throw up usually once or twice and just feel completely hung over. Many of you would say this is a normal hangover, but what puzzles me is I do a lot to prevent it....eat after im done drinking, drink TONs of water before I go to bed, and the most unusual thing is that it's the same every morning, I hardly have anything in my stomach to throw up, it's always just yellow bile. Is it possible that my liver may have a problem and just can't handle alcohol anymore?