I have a 3 year old daughter. She has never been a good eater- she eats shells and cheese, crackers, French fries, pop tarts (sometimes strawberries, pasta, chocolate chip cookies). For the past 6days she hasn t eaten (maybe a few bites of a couple of pop tarts), but drinks about 16 ounces of milk per day. She asks for food, but when I give it to her she says she s not hungry or doesn t want anything. Yesterday she had a tummy ache- the middle above her belly button. She has normal bowel movements everyday, except today she didn t have one. Any ideas of what this can be?