My period pains are horrible, i throw up and faint and can't eat what can make them better?

I am 13 i have had my period for 3 years and today they got a lot worse, i throw up when i take pills, i cant eat and feel nauseous so i throw up but there is nothing in my stomach so i puke my stomach acids and 2 hours ago i fainted for about a minute. i am really clammy and feel hot and cold at the same time can anyone help me?