Bless your heart. You must be absolutely miserable!! I've found that using plain, nothing added, yogurt with a drop or two of Tea Tree Oil is an amazingly powerful cure for any and all yeast infections. You can either apply the yogurt to a pad and then change it 4-6 times per day, or can use a sterile "injector" from a standard OTC yeast treatment.
I've been a diabetic for over 40 years, so believe me when I say I am the poster child of yeast infections! :)
Eating garlic, taking a probiotic, and consuming a lot of PLAIN yogurt will help your body return to normal. You may also find that drinking a large glass of water with 1 drop of Tea Tree Oil (and/or 1 drop Oregano Oil) will be very, very helpful.
I'm sure you've already done this, but throw away all your nylon or synthetic underwear and only wear 100% cotton undies until you're healed.
Please keep us posted on how you're doing. Good luck! Hang in there ... it does get better! :)