This patient support community is for questions related to juvenile diabetes including celiac disease, depression, diabetic complications, hyperglycemia / diabetic keto-acidosis, hypoglycemia, islet cell transplantation, nutritional issues, parenting a diabetic child, pregnancy, pump therapy, school issues, and teens with diabetes.
One of the best ways to get rid of yeast infections, long term, is to regain rigorous control over your blood sugar. Yeast just loves a sweet moist environment, which is what female diabetics with high blood sugars provide routinely.
Some antibiotics can raise our BG which is an additional challenge while being treated.
Keep the area very clean and talk with your doc to review your insulin routine and your resulting blood sugars. I got the sense that 250 is not common for you, but if your a1c is not normally below 6.5, then you likely have sustained periods of too-high blood sugars.
There are some topical creams that can ease the agony of a yeast infection, but likely you'll need an appt with a gyn doc to evaluate the new symptoms you've described.
Good luck.