My head seriously hurts what should i do?
You can try a simple trick like putting a wet cold towel on your forehead and lying down face up. This can help or you can get pain killers from a pharmacy in your home area too. If the pain is too much, you can go see a doctor for treatment.
Like a headache, or like you hit your head on something/got punched in the head, or you might have cancer bad, or what?
get some sleep in a quiet room for 3 hour's
Usually a headache is a symptom of dehydration. Try drinking some fluids and resting.