my ear is sore too.. someone told me that my ear is probably sore from sleeping and it being in a position that wasn't comfortable.
You should not use a hearing aid when their is an open sore. Allow the sore to heal.
They can be.
no red bump behind my ear. behind my ear it just sore
(i think) the one behind your ear is called a pelvis
Ear infections, thrush
How often and how much to take for an ear infection
First make sure that the sore is not ear mites. Any application of neosporin on a cotton swap will heal an injury. IF IT IS NOT EAR MITES! A few drops of mineral oil will aid in removing ear mites. Your vet will also have a solution available for this application.
You can get them here: http://www.dealsishop.com/silicone-replacement-ear-tips-for-apple-in-ear-headphones-remote.html
Look into seeing if you have TMJ
you probably have cancer
Go and ask a doctor