Recurring Vaginitis

I had been to the doctor for an unpleasant discharge that was making me feel wet all the time and was diagnosed with vaginitis. I used metrogel for 5 days and the symptoms went away until about two days ago when the watery discharge with an odor started to return. I don't want to be on metrogel all the time. Is there anything I can do to cure this myself and keep it from coming back?