Have had problems with this in the last few weeks. I'm pretty sure it's because I had to go on some strong antibiotics to get ride of a mean sinus/bronchial infection. These drugs can have that side-effect. Yogurt helps, as does acidophelus (sp? guess none of us can spell it!) Also there's some great OTC meds for this now, stuff we used to have to get prescriptions for. Just peruse the "feminine hygiene" shelves at your local pharmacy.

And what everyone else said...ditto. Not to be too specific, here, but warm, wet environments grow yeast. So ditch the Izumis and wash off (even using a baby wipe followed by dry hand towel is good), then put on dry shorts, preferably 100 percent cotton that breathes. Good luck!