My 1 year old daughter has been having green stools with mucus in them, increased frequency of stools with undigested food in them. (Food from lunch at noon is in her stool at 4 pm partially undigested). She recently started whole milk. She started some whole milk on July 7th mostly in morning and night with breastmilk during the day. We went on a family vacation last week and she was completely on whole milk the whole last week. These symptoms have been going on for about the past 4 days or so. Does she have lactose intolerance or a milk allergy? She otherwise eats well and is playing like normal.