When I don't eat right away then eat something later I get extremely nausous and can't keep anything down my head kills too could I have hypoglicemia?

Hypoglycemia. No, you don't have hypoglycemia. Its a common myth that when you're hungry you must eat right away or something bad happens. We have 4 hormones that prevent us from a low sugar (glucagon, cortisol, adrenaline, and growth hormone). We have only 1 hormone that lowers our sugar, insulin. Indeed, it is not dangerous to miss a meal.