Order Miconazole cream on Amazon prime! It will come in two days. Also, eat lots of organic yogurt (not supermarket brand), miso, and other fermented foods. Also put some baking soda in a sitz bath and let the water/baking soda touch your vulva. Lastly, order some oregano oil and put some drops under your tongue.
Okay this sounds crazy but it works, if you have access to plain unsweetened yogurt, dip a tampon in the yogurt, insert it and leave it in there for about 2 hours twice a day. That should help with the itch until you're able to get to the pharmacy.