My 7 year old son has had a moderate fever (101.5-103) for 4 days now. I have been managing it with ibuprofen every 5 hours. He has NO other symptoms... good appetite, lots of energy, no nausea/diarrea, etc. I took him to our Dr. on day 2, and she diagnosed flu , and put him on Tamiflu. I am concerned that the diagnosis is wrong - since he has developed no other symptoms. Do you have any suggestions that I might need to look at?