My 14 month old has a really bad diaper rash, very red and very bumpy and raised. Its been 2 days, and looks to be getting worse not better. I am at a complete loss as to how to help it because tbh, my boys never really get rashes. When they have in the past, diaper cream one time cleared it up. I am using Desitin every change and changing diapers often to try and keep it dry. What else can I do?