DD2 has a bad rappy rash. The worst I have seen on either of my girls. She was fine this arvo but when I took her nappy off tonight, she was blood red on both sides with blisters! It was painful for her when I wiped. She had a bowel movement but it has never affected her like this so maybe it was something she ate. What can I use to help her? I have put on Bepanthan. Will this work?