Had 2 Drinks Last Night And Woke Up A Little

had 2 drinks last night and woke up a little light headed and blood in my spit, i did not vomit or cough up the blood, just woke up with dry mouth and had to spit and that's how i noticed the blood. this is the first time this has happened. would you happen to know what this means? also keep in mind i do not drink often this was the first time i have drank alcohol since thanksgiving.