This must be very distressing. Has your gynecologist offered any advice, possible diagnosis or treatment options?
I understand, from what you have mentioned, that you have been tested for STDs, had a pelvic exam with a Pap smear and been checked for a possible bladder infection.
Has your physician mentioned bacterial vaginosis as a possible cause?
Bacterial vaginosis is the most common type of vaginal infection. There is an overgrowth of bacteria and the delicate balance of the vaginal environment is upset when these bacteria occur in increased amounts.
The most common symptom is a smelly vaginal discharge. It may look grayish white or yellow. A fishy smell is another symptom. The odor can become worse after sex.
Doctors diagnose this infection by asking about the symptoms, doing a pelvic exam, and taking a sample of the vaginal discharge. The sample is sent to a lab for testing.
Bacterial vaginosis is treatable with antibiotics.
I hope this helps.