What Causes Vaginal Discharge While Using Sugar Products?

I am 48, weigh 130 and am about 5'7". and my last period was 2 years ago. Everytime I eat anything with sugar (bread, even natural sugars in grapes and such) in it I get a vaginal discharge? Not sure why. Last two years I have had some issues with my sugar, but these have cleared as far as I can tell. I am a chemically sensitive person and have been for about 10 years now. I'm a vegan and don't usually eat any refined foods. Can you possibly help? Jennifer