Typically for the first time, you should see a healthcare professional to confirm. If you’re really really super 100% sure it’s a yeast infection and not BV, an STI, ovulation, or anything else there are OTC treatments. Monistat is usually the go to. It comes in vaginal treatments that last 1, 3, and 7 days. The quicker, the more potent, the more discomfort. I recommend 3; it’s a good balance. Dose it at night so you can sleep through most of the goop.

3