I put dc down for a nap then went back upstairs to check on her about 5 mins later, fast asleep but the room smelt very strongly of poo. She obviously pooed in her nappy. I left her to get some sleep as she has been unwell and not sleeping great...it's now 2 hours later...shall I wake her up and change her? Let her sleep and change when she wakes up? Have I done the wrong thing, should I have changed her immediately and woke her up do you think? Feel bad and worried she'll get nappy rash.