Hi
Welcome to the MedHelp forum!
Since the lump is growing, yes, please speed up the process of investigations. If your PCP is running the tests, its fine, otherwise you can go to a hospital.
Lump behind the ear could be an abscess, folliculitis (hair follicle infection), an infected cyst, an inflamed lymph node or a neurofibroma (localized harmless swelling in of nerve and connective tissue). However swollen lymphnodes behind your ears could be due to chest infection, tonsillitis or pharyngitis, dandruff, or infection of ear.
Since I cannot examine you and know other related conditions you may be having, nor is a detailed history possible on net, I have listed the various possibilities that should be looked into. Please consult your PCP to run tests and examination to clinch a diagnosis.
Take care!
Check to see if its a lymph node am i spelling that right any way check to see if you have mono or lyme Best of luck Jay...
chk into hospital,if u are having this fr months then go to hospital asap