Purely selfish question ahead...

Sarah has the worse rash on her vuy-jay-jay that I have ever seen. She has never had anything like this before. It started off just as a normal looking nappy rash but persisted which is unusual for her. Its now extremely irritated and blistery. The blisters look like they are raw and its really annoying for her when her nappy is wet or dirty. So of course I try to keep her dry as well as trying sudocream, bepanthan and brauers relief but nothing is clearing it up. It calms down sometimes but flares back up again soon after. Anyone got any other ideas to try? Off to the doctors as soon as I can get in to rule out fungal.
Gonna go do nappy off time to give her some relief.