If an over-the-counter treatment doesn’t eliminate your yeast infection, the culprit may not be a yeast infection at all; it may be bacterial vaginosis, which must be treated with antibiotics. “Sometimes these infections can have a yeast component, too,” says Augustine. “But if the infection didn’t clear or it comes back quickly, it can often be because of a bacterial infection.”
Augustine says you should also see a health care provider if you have frequent yeast infections. The recurrences can be due to an underlying medical problem. Diabetes, uncontrolled blood sugar or an immunosuppressant disease such as HIV are among the variety of potential causes of recurrent yeast infections.