Help! I've got terrible headache!!

Since yesterday when I lay down my head, some kind of liquid came throughout my nose and today I've got a terrible headache like my head and my eyes going to be exploded.  I've read some articles and they said maybe it's a sinus headache or I may be dehydrated.  Both are true enough indeed hehehe.. I'm the type that don't drink a lot of plain water.  For the whole day, I realize that I only consume one or two glasses of plain water and the rest is eerrrrrr Nescafe *wink*wink*..  Need some rest...chiaaooowwwww!...