I have had foul-smelling vaginal discharge for several months. Sometimes it is brownish in color, sometimes light pink, sometimes light yellow, sometimes tan (reminds me of tea). I start off the day fine and by 5pm my underwear are absolutely soaked with it. I try to change liners when I can, but it's often not enough to keep up. At times, it runs and runs. I have never been sexually active, and it's not bacterial vaginosis (pH still normal). Also no burning/itching like with some infections. Any ideas as to what might be causing this? Doctor is not interested in helping find the underlying issue.