Tell your parents and/or go see a doctor.
You may have a migraine. Yours are classic symptoms. I have them, too.
I have had migraines since I was in elementary school, and this sounds like a severe one to me. I would tell your parents and let them know how bad it hurts and that it doesn't feel like a regular headache. Also, if these continue or if you've had these kind of headaches before, definitely seek out a doctor. It would be wise to get their opinion. There are medications and general health tips to decrease migraines and symptoms that I myself use. Hope you feel better.
You could be suffering from a severe migraine...... in that case I would take a few Advils and lay down in a quite dark room and try to get some sleep while the medication has some time to take effect. You are feeling sick to your stomach due to the migraine, once the migraine goes away the nausea will too
sounds like a migraine....you are studying too much and should drop out of school at once
your neck muscles are probably tense. go get a neck rub and put a hot and cold patch on and you should be fine.