My dd is 3 week on wednesday. Her belly button stump fell off around a week ago, she was left with a bit that looked open to me when she cried or stretched but midwife said it was fine. Since sunday her belly button has started to smell so i am taking her to gp in the morning, however i have just changed her nappy and it looks red and i am now really concerned. Anyone else had this? Is so what is the treatment?