I wonder if any doctors truly know what we go through as a woman, with this problem....What you say is something big.....I know....I used to live there with you.....That is until about four years ago...Then it disappeared near overnight....I believe that this pungent fish like smell come from the Skene's or Bartholin Glands being clogged....But I am guessing and only using my experience as a woman and what has happened in my life to state my findings........
You may have a yeast infection.....I have heard this said and read it written.....However,l I don't know if I go for it.....
Good luck with the doctor....
Caroline