I am Dr Ravinder sharma ENT Surgeon
On the basis of the information provided it seems you have an infection involving ear and the mastoid (bone at the back of ear) or infection involving lymph
noe at the back of ear. I would advise your for a ENT consultation and audiometry
for the diagnosis. You may need some more tests like fine needle aspiration biopsy
from the neck swelling and examination of ear, nose and throat.
I hope this answers your concern. Feel free to contact me if you require more information about it