My 6 year old daughter for the last 5 to 7 days has been extremely tired and exhausted by 1:00pm or so, even after a good nights rest, in the mornings she seems fine and rested but by afternoon time she is so sleepy and tired she is getting to the point where it makes her cry. She has no fever, she eats breakfest, lunch good, some dinner, but not like she normally does. Any Ideas of what might be wrong with her??