feeling the blues

yes i am pmsing..and it is really bad....this mth my pms is really bad...usually it is just a few days before my p comes, then i will get very irritable...everyone will irritate me...but this mth is worse...my period is here but i still have this irritated mood...dun talk to me or i will bite ur head off...was it something i ate this mth??i must try to control my mood swings man