Nystatin triamcinolone, yeast infection? Help!

I have a really bad yeast infection and my Dr prescribed me Nystatin triamcinolone cream and oral pills. It says the cream should be applied twice a day but where should I apply it? My labia majora is fine, inside my labia minora is where the irritation is. I know I can apply it inside my vaginal canal but can I put it on the inner lips of my labia minora?