Suggest Cure For Foul Smelling Vaginal Discharge

HI I AM HAVING PROBLEM WITH VAGINAL DISCHARGE WHICH IS FOUL SMELLING BUT NO ITCHING. CAN U TELL ME WHICH MEDICINE I SHOULD TAKE. LAST TIME I AHVE TO ONE GYNECOLOGIST AND HAD GIVEN ME SICNAZOLE, I GOT ALRIGHT AFTER THAT BUT AGAIN AFTER FEW MONTHS SAME THING HAPPENING.