Period help, why do i get so sick? is it normal?

Yes, that happened to me too. It is because you need some food in you. Eat some bread or something sweet to bring your blood sugar level up. Keep hard candy with you. If you think you're going to faint, put your head between your knees or just bend down and touch your toes. You should probably take some Tylenol or some Advil. That should help.