Avoid the one-day yeast infection treatments available over the counter. Instead, try a five- or seven-day treatment. The medications in the single dosage kits are often very strong, and they may lead to further stinging and irritation, on top of that caused by the infection itself. The multi-day treatments are less potent and less likely to be irritating.
To help combat a yeast infection, use yogurt. The good bacteria in yogurt can help you find relief from a yeast infection, either eaten or applied externally. Just be sure to get yogurt that is plain and unsweetened. Any variety with sugar is only going to make the condition worse.