My Daughter is 18 days old. And she has a horrible rash on her butt with blisters. Yes we have brought it up with her Pediatrician and she gave us medicated butt paste that does not seem to be working at all. What else can I use to help her get rid of this rash and these blisters? I hate seeing her in pain. We have tried soaking her in warm water and laying her on a towel without a diaper for a little while but none of that is helping either.