Thank you for your query,
Your son seems to have an ear infection
and the fever may be related to this infection.
For fever you can give Tylenol
in prescribed dosage every 8 th hourly depending on the presence of fever.
Don't worry and don't panic about the meningitis
Meningitis presents with headache, vomitings, and neck stiffness
and child will be dull.
As the symptoms are not there , don't worry.
Consult your doctor for proper medications and antibiotic if required.
Hope I have answered your query.