My 16 month old DD has suddenly developed a fear of poo in her nappy. She is fine with having a wet nappy changed but seems aware of when she has had a poo and becomes very distressed at the prospect of having it changed. So much so, that tonight she was clinging to her Dad and screaming as she knew I was about to change her nappy. When the nappy is off she becomes more distressed by the sight of it. We haven't done anything on the potty training front, although we do have one and she has sat in it once or twice before the bath and inadvertently had a wee in it. Just looking for some reassurance that it's a normal stage of development and any advice on how we can support her.