Two words:
Clean
Dry
Change out of cycling gear as soon as you get off the bike. There's a lot of sweat glands in that region and that chamois...it's like a sponge.
Never climb back into dirty gear.
Handwash, vinegar rinse, hang to dry outside with the gear turned inside out.
Cutting back on refined sugars...always laudible. But SUGAR is sugar, okay. Fructose, sucrose, glucose -- it if ends in "ose", it's sugar. If you're having ongoing repeat and persistent urinary track infections, I urge you to have a glucose tolerance test. If I recall from your other posts, you've had signifigant weight issues previously and diabetes is a very under-diagnosed condition. In fact, we suspect half the people who have Type II diabetes don't know it and therefore can't manage it properly.