the headaches caused by the dehydration of the brain

all the paracetemol does is mask the pain a little

as the others have said drink a pint or more of water before you crawl into bed
if you waken in the night drink some more

and when you get up drink more

try not to have any caffeine and definitely no more alcohol til your liver is ready for it

coffee has a diuretic effect


and remember not to drive within about 12 hrs - depending on what and how much you drank, as you will still be over the limit for drink driving