Sorry if this is a little tmi! My dd (3) has just done a poo and a small part of it (about a quarter of a cm) seemed to be pink/red. It didn't look like blood, just part of the stool. I haven't noticed this before. She did eat a packet of sweets yesterday which she hasn't had before and she has be drinking a lot of bright red coloured summer fruits drink over the last week.
She is otherwise fine in herself apart from a runny nose and cough that we all have in our household.