Advice and help please

Im not a big drinker at allI usually avoid alcohol all together . But yesterday I decided to drink and I went way overboard. I must have drank 16-20 beers . And today I woke up not being able to keep any fluids or food in. And started throwing up green mucus like liquid with small specks of what looks like blood in it.

As of now ive been trying to stay hydrated and feel alot better I can hold in liquids and soft food but is this something I should still be concerned about? Nothing like this has ever happened to me before