Discharge, if present, is usually white or gray; it can be thin. Women with BV may also have burning during urination or itching around the outside of the vagina, or both. Some women with BV report no signs or symptoms at all.

I would recommend getting back in touch with your doctor to see what he/she says. They may need to run some tests to give you a proper diagnosis and treatment.

Good luck

you should clean your underwears extremely well so the bacteria washes away.

and clean your vagina as much as possible.
there are different smells to a vagina but usually when its a fishy smell that means there is bacteria.

you should go back to your doctor and have it checked.