Drank too much last night and can’t keep anything down, including water

Like the title says, I drank too much last night, went home, threw up a little bit in the bathroom, and crashed. The next day I woke up feeling fine if a bit dehydrated.

A few hours later I went out, got a bottle of water and started drinking it. As time goes on and I am still out, I start feeling worse. And eventually I throw up, and since I had not eaten in about 18 hours, it’s all liquid.

I try grabbing a quick burger to settle my stomach, feel a little better, but again I start to feel sick, and about an hour later I throw up again.

From then on I have been mostly drinking water but I keep throwing it up. It has been about 5 hours since this started happening, and I am starting to get concerned.

Even as I am typing this, lying on bed, I can feel myself getting more nauseous. I am not sure what to do.

Is it just a bad hangover that will pass, or is it something more serious?