My son is 10, 4'9" and weighs 63 pounds. He has not been himself lately. He recently had unexplained swollen lymph nodes, and a enlarged spleen. His most recent scan showed his spleen back to normal. His white blood count was low, and he had ketones in his urine. His dr. said he just had a virus. His only symptoms have been tiredness, asthma symptoms, and headaches off and on, and he is pale. No sore throat, or cough, or runny nose. Should I keep pressing the dr to run more tests? Could this still be a long lasting virus? What kinds of things should I have him tested for? We live in a very small town, with only one pediatrician, and I don't have a whole lot of confidence in him. Please help!!