There are many possible reasons why you might be getting vaginal infections. It could be due to something as simple as not wiping front to back after using the restroom, which can allow bacteria from your anus to spread to your vagina. It could also be due to sexual activity, either because you're not using protection or because you have multiple partners. Douching can also increase your risk of infection, as it can disrupt the natural balance of good and bad bacteria in your vagina. And if you have diabetes, that can also up your risk, as high blood sugar levels can allow bad bacteria to grow more easily.