I have had air bubbles coming out of my vagina for at least 3 months. They only come out when I pee. My discharge is excessive, not cottage cheesy, or green. Its clearish white and it smells different but not gross or like fish. I was tested in April for STDs and I was negative for everything except HPV and abnormal cells caused by a yeast infection. I am not in pain, I m not sick, I have no symptoms and my periods are regular. What could this be?