What I tell people is a yeast infection is a yeast infection for 5-7 days, no matter what you do. The diflucan works over a period of 72 hours, so be patient. In the meantime, wear 100% cotton undies, loose clothing, try not to scratch or rub the area as that can make it worse, and no sex til its all better! There's not much the gyno can do after you took a diflucan if you're still in the 72 hour treatment period. You might want to get a 7 day over the counter yeast infection cream (ie 1% clotrimazole = gyne-lotrimin is my fave). DO NOT do the "1 day" or "3 day" creams- they will burn and sting. You can use the 7 day cream twice a day and apply it to the vulva to soothe the tissues, you dont have to use the applicator unless youre still really itchy/irritated inside. You can also call your gyno and ask them to call in a Rx  for "Lotrisone" or "Mycolog 2" cream to your pharmacy, it's a little bit stronger anti-itch/anti-fungal cream than what's available at the drugstore. Also remember that ice is a good pain and itch reliever- sitting on a bag of frozen peas wrapped in a small towel can help.

Look at it with a mirror- if there's sores or a strong fishy odor- to the gyno you go. And remember, if you go to the gyno with a bunch of cream on/in you there's not a lot we can do to test or treat. So if you go in for an exam, avoid the cream the day of and the night before. If it's been 4+ days since you took the Diflucan and still no relief, make an appointment with your gyno.

Good luck! Hope this helps