My period makes me really sick

I have a normal period, comes once a month, lasts 3 to 5 days always, normal to light flow, and I dont get cramps (ever! ^_^) But - I usually get incredibley sick as in I feel like I have to vomit, I get very faint aswell. The worst case a was when I needed to go to the hospital because I went into shock, (they made me pee in a cup, saw everything was supposedly all good, and sent me home the same night…) one other case I fainted and threw up, and the rest I usually just come home from school and watch some good ol’ t.v. I’ve also had hot cold flashes before and what seems to help is a hot shower or a heating pad with a cold cloth on my head. The best thing to get rid of the “sickness” is to pop a couple advil though, up to 8 in that 3 to 5 days… Whats wrong with me?

also I should mention my mom has bad endimetriosis or whatever its called… its even continued to her lungs, and I was just wondering if I could possibley have that hellish disease? I prey I do not she has such a hard time breathing duren that time. It makes me worry horribley. But she says her periods were heavy and painful when she was my age so… I don’t know… oh yeah, and im 16.

(p.s. I’ve resently been taking vitamins and my last period I only needed 2 advil! explain? hormones unbalanced or what? I hope it doesnt happen agian)