BV or yeast infection?

Go see an doctor. I had a similar experience with yellow stain in my underwear and was prescribed medication for BV which get rid of the stain in few days. During your appointment an doctor will exam your and take a swab, which in few days you should be able to find the result of your test. It is important that you go see an doctor as soon as possible. Treatment for BV come in cream or oral. Also try eating natural yogurt it is good for the bacteria in your body.