Found this on a web sight:
""""how can I tell when I have an infection?
If you have an odorless whitish discharge that's causing you discomfort such as itching or burning, or your vulva looks inflamed, you might well have a yeast infection. If your discharge ever becomes foul-smelling, or frothy or yellow, green, or gray in appearance (even without symptoms of irritation, itching, or burning), you might have a different kind of vaginitis or a sexually transmitted infection. In any case, don't try to treat yourself with over-the-counter medications. It's important to see your practitioner for a diagnosis and appropriate treatment. """"
i would as your doctor about it...If you have any questions call and ask your Dr...Your better off knowing if you are alright as opposed to not knowing. I would be asking. It may be nothing but I would look into it.