Although the dose you have taken is quite low, you could have potentially caused some acute liver damage, which should correct over time. However, if you do feel worse and are not getting better or if you have any sense of confusion or change in mental status, go to the nearest ED (you maybe in acute liver failure). If it doesn't worsen, stay off the alcohol and acetaminophen for a while and let your liver regenerate any of the acute damage you may have caused. Don't be an idiot next time and show better judgment.
cheers,
bodybuildermdpitt