Okay, so yesterday, I threw up like four times and i had a really bad head ache. Today, I thought the headache would have been gone by now because it's been 24 hours, but it didn't. The headache is still here and is even worse. My head doesn't hurt at all when I lay down, but whenever i stand up the headache starts up and will hurt for a half an hour no matter what i do. What should I do to get rid of this horrible headache? Please help!!!