By the sounds of it, you have a yeast infection.
Is it thick and white, like cottage cheese? If so, then it's a possible yeast infection. If this is your first yeast infection, I'd get checked out by your doctor.. possibly an OBGYN. They'll do a test, and if it's positive for a yeast infection, then you'll get either oral medication or a couple of gel pills you gotta insert into your vagina.
If you're wanting to test yourself, at home, then you can.To be sure, get a yeast infection test strips. They're by, I believe, Monistat. I'd get one of the tests, read the directions carefully and see what the results are. If they're positive, then get a Monistat Yeast Infection treatment in the store. Comes in 3 different kinds.. 1 Day, 3 Day, and a 7 Day.
But I recommend to go to your Mother, or an older close female or relative and go see your doctor to get checked.
sounds like a yeast infection....please dont use tampons anymore unless its your period time...that is definitely not healthy. You can go to Walgreens drug store and by a kit to test if you have a yeast infection and them by the monistat 1 day. hope this helps