How To Cure The Itching And Burning Pain In The Vagina?

am a lady in he 30's, 5 feet tall and weighing 65kg 3 days ago my private part stated itching me and i tried checking with a mirror and i noticed a mucor covering the surface of my vagina. i washed it off and went to a pharmacy store to buy metronidazole and mist pot citrate but i still feel terrible because the itching and pepperish pain persist.what can i do or use, am so disturb