What Causes Chill And Cold Every Month When I Get Period?

Hi, may I answer your health queries right now ? Please type your query here... When I am on my period I aways feel weak and tired, my vision goes blurry and I fain then throw up. After I get the chills and a cold sweat and it feels as though someone is stabbing my lower back. This repeats EVERY month when I get my period. Is something wrong?