Following fall there may be injury to head or any other part of body. Now head injury
may be external or internal. He does not has any symptoms of head injury like vomiting
, irritability, lethargy or abnormal movement. You have also examine the body parts for injury and there is no pain. So you need not to worry.
Fever is not a symptom of injury to any part of body. So it has no relation to the injury.
I would suggest you to monitor the temp. give paracetamol
for this and consult a pediatrician
to evaluate the cause of fever.