Hi, Welcome to HealthcarenMagic Forum.
What is your age and Gender? Since how long do you have this Problem? Do you have associated cough? If the Fever
Occurred after the Lump behind your ear, it could be Tuberculosis
, but nothing can be confirmed until and unless confirmed by a Physician. Kindly get yourself examined at the earliest as you will require blood work up to confirm it and medications for the Infection. If TB comes out negative, you should be getting yourself examined by a ENT Specialist
to rule out any ENT pathology.
Eat healthy nutritious balanced diet which should include fresh fruits and green leafy vegetables. Avoid stress
and drink plenty of water.
Wish you Good Health Take Care.