ok, try to figure out why you are having the headache, if you are suffering a congestion, try to take something for it, if you feel like you want to vomit, then may be it is your stomach and u need to drink some hot mint, it is like magic.
For a quick fix try to take the panadol with some energy drink like red bull ..The caffeine content will ensure you remain awake
I am sorry for not being much help...hope you get well soon in sha Allah