What Causes Pale Coloured Stools In An Infant?

Hello, my daughter, who'll be turning 4 this March 8'th 2015, has had very pale, chalky, stools for the past 48 or so hours. Besides that, she seems to be ok? She said her head was hurting her yesterday, only in the right side though, near her temple area? She hadn't mentioned it to be bothering her today until I asked her this evening, which apparently is not severe. At first, Her father told me it was probably from all of the powered donuts her grandfather gave her. Even if that were possible, I don't think a toddlers tiny stomach would still have the same pale looking stool, days later, after NO more powdered donuts. I called the oncall pediatrician and made an appointment for tomorrow morning, but I was hoping to get some more informative advise to kind of ease my mind a bit. Also, I'd like to know what kind of questions or exams I should have her doctor look into further. I do not enjoy feeling like my daughter is just another medical record number, or that every alement is a "viral infection" that can't be treated or tested. Especially when there is even a small possibility that if left unchecked, severe long term damage, may affect her. Any information pertaining to the matter would be much appreciated. Thanks, V. Lopez