It sounds like you have an ear infection, and possibly upper repiratory tract infection too. Its possible they are all related.
The lump behind the ear is a swollen lymph node which is a sign that your body is fighting an infection.
When it affects the ear, you need to see your family doctor as perforated ear drum is a consequence of infection that is incredibly painful.
Once the doctor establishes whether the problem is bacterial or viral, then appropriate treatment can be given.
Please make an appointment ASAP with your doctor.
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