Thanks for your query.
You can apply an antifungal like Canesten
ointment till the appointment.
If it is very itchy, use an anti itch cream like Vagisil
Keep the area clean and dry.
Wear anti allergen soft cotton underwear , and probably none at night.
DO not use medicated/perfumed soaps, lotions or cleansers to clean the private parts.
Do not over vigorously scrub or rub the area, gently clean with warm water.