Suggest Medication For Delay In Periods

Hello mam,i missed my period.i am a married lady. my marriage was taking place on 8th feb 2015. my period date was 0n 9 this month bt it was always be in before time but till it z nt going on..can u pls suggest me wht could i do in this regard. i am also a working lady so i am very much serious about it...