Why is my head hurting?

Well its starts when I get back from school,my head starts hurting,I would feel cold and then hot...its so annoying because its been going on 4 about a week now and now my arms are shaking...I'm thinkin maybe its because the weather is changing

Hi,

The first thing I think of? Sugar! If you're going the whole day without eating much, or without eating much with sugar in it, your blood sugar levels could be low. Have a piece of chocolate or a granola bar with honey to bring it up.

Is it getting really hot out where you live? If it's not sugar it could be dehydration. Even if you don't do sports or run, you could be dehydrated simply from sweating, and not even realize it. Make sure to also drink plenty of water.