I didn’t drink in the last 5 years. I met a friend today I had some gin. I’m back at my hotel now, and I have a pounding headache. I’m attending a work related conference tomorrow morning and can’t have a hangover or shit because I’m presenting.
I know, I shouldn’t have gotten drunk, but wtf. I only had 2 rounds. Just very little gin with tonic.
What can I do now - to not have this headache or hangover tomorrow 
How much water should I drink? Shall I take ibuprofen?