Alcohol problem

Patient: One night a couple months ago i drank alcohol. It wasn’t an excessive amount. But i am 5’6 and 110 pounds. After i drank i threw up from 10:30 at night until 9:30 the next morning. I was throwing up all night and barely remember any of it. This one of my first times drinking that much too. However, after that I haven’t been able to drink alcohol at all. I tried last nights and took two sips. However, 5 minutes later i threw it up. What is wrong??