###Human: I had a PVS ultrasound for unusual brown vaginal discharge. Please explain the result. ###Assistant: Hi. There are more chances for you to have a chronic infection of the cervix which ultimately leads to foul-smelling discharge. But a few possibilities of other things are also there. That's why your gynecologist is waiting for pap smear report, and she will prescribe you medication according to the discharge type, amount and color. You may have to take medication up to 21 days, and you may require to test the discharge. Drink more water and keep the vaginal area dry. Do not have intercourse. These precautions will help you in decreasing the infection and recurrence.