Am I/Was I dehydrated?

I drank half a bottle of rum last night and threw up a lot. I woke up this morning with a bad headache and super thirsty but I threw up the water I drank. I fell back asleep and literally slept through a tornado warning lol.

I felt super weak and my head hurt so bad when I woke up for work.

I have drank a lot of water today but have barely had to pee. Does that mean my body is just holding on to the water?

My boss at work had commented how I seemed “out of it”.