Yup...Probably a yeast infection...Or something similar...If you have never had sexual contact with anyone, it is just something that we women just have to deal with.
Go to your dr and get an exam...They are a little embarrassing, but remember, our dr's do this stuff all the time, and get to see all sorts of interesting things...So don't worry.
It wouldn't have anything to do with hiv to my knowledge...Never read anything about that.
Peace
shannix