My almost 3yo has been potty trained last month. She got it right away, had only a couple of accidents the first week and is wearing underwear. She wears night time diaper at night, but has been waking up dry for more than a week. So we are thinking of doing away with those, too, now. So today she tells me her vulva is ouchy, and I look to find a rash! It is red around her labia and looked like a diaper rash to me. I put on some desitin and put a diaper on her cuz I didn't want the cream all over her underwear. I put on more desitin at bed time and put night time diaper on her. So what is going on? How can she be getting diaper rash wearing underwear and using potty? I wipe her when she uses bathroom, really a gentle dab is all we need usually. Any ideas?