My 3 year old has stated her "tummy" hurt the past few days. Tonight, her stool was loose and it contained yellow capsule like substance throughout it. They were not small, easily noticeable (as the photo shows). It was not remnants of food either. I changed her diaper and then she had another bowel movement within a few minutes, exactly the same. What would this yellow capsule like substance be? And should I be concerned or could it just be a virus.