PLEASE HELP ME !!!!

Recently I've been getting my period but on the first day it hurts me so much to the point where I feel like I'm about to pass out , my face gets really pale I get nauseous and I get really hot and I feel like I'm sweating but I'm really not. If someone could please help me understand why this happens to me every time it makes me want to go to the ER because I'm so desperate for it to stop hurting ....