I'm pretty much in the exact same boat as you. Only I'm 25.
The look of the penile thrush I can deal with. But the dwelling pain in my groin from prostatitis/epidytimis/candida is truly hell. Unfortunately as far as I know we can only suffer it while practicing our anti candida campaign. I have only felt die off recently (as far as I know). And I don't partake in sugary foods, save a few items with questionable Sugar content like a small glass of pomegranate juice. I haven't noticed discomfort from it though. Thing I figure though is that your candida ridden body is more than happy to receive such a gift of sucrose so it's not going to make you feel terrible. I'm still new to this though, and still learning a lot. I'm just on my third week of the strict diet. The only thing you can have solace in with this battle is that you must bring your body back from the brink, whatever the means. It's so tough but I know we can perservere.