Hi, thanks for your query.
Analysing your symptoms of heaviness and
numbness in the ear and behind the ear, you probably might have a
ear infection or
otitis media.
Otitis media is the infection of middle ear with or without perforation of ear drum.
In your case I do not know whether you have a perforation in the ear drum or not?
If in case you don't have perforation in ear drum , then probably decongestant medicine +antihistamines and
valsalva exercises may help you.
If you have perforation in the ear drum, because of ear infection ,then untill the ear drum heals you will have this numbness , heaviness in ear.
If I were your treating doctor I would examine you clinically and advise for audio me try test and eustachian tube function test, to know the middle ear status.
Depending on the report I would you as above.
Hope I have answered your query. Thanks.