It would be better if you just go see a gynecologist and confirm that you are having the yeast infection you think you do.
dont go away on their own and need proper treatment and also finding the cause.
Although monistat vaginal tablets
are safe to use it would be better to use it after consulting your doctor.
Till then avoid touching and scratching that area. Keep the area dry. Use cotton panties, and avoid using tampons or intravaginal devices.