I have an eight year old son who is getting headaches almost daily. His stomach is crampy and he complains of pain in his thigh. He also runs a fever quite often 2-3 times a week. He also is sleeping more than usual. About 11 -12 hours a day. At times he seems to be on the lethargic side. He does have a weight problem, but he rides his bike 1/2 mile to and from school each day and he rides 1/2 mile to and from a friends house after school. He eats well - not much of a vegetable eater - but eats lots of chicken and eggs. We have had his eyes checked they are fine. This is the fifth boy I have raised and some of it seems to be "growing pains" should I be more concerned?