Hmm...Yes, I've had the same type of pain many times (also burning??) that you've described: chest (now, mostly upper ribs, though), then under one of my arms and sometimes down it. However, mine has nothing to do with drinking -- because I don't drink at all anymore. I have had months and months of GERD problems (though, luckily, knock on wood, the problems seemed to have lessened some recently). My chiropractor seems to think that the pressure of the acid reflux can trigger a whole chain of other nerve problems. Who really knows, but it sounds somewhat logical to me. My weird above-described pain/burning would often (but not always) be at its worse during bad acid reflux episodes.