Welcome in H.C.M.
I have gone through your query regarding swollen throat , pain in ear.
After considering all aspects of your symptoms and their co relation it appears as most likely you are suffering from upper respiratory tract
infection with eustachian tube dysfunction
In your case infection from throat reaches middle ear through eustachian tube and gives feeling of blockade in ear and pain. Whenever we swallow any thing the pharyngeal end of eustachian tube gets open for ventilating or maintaining air pressure in middle ear, since your throat is infected therefore this eustachian opening becomes painful on swallowing .
To treat it you should take-
1- Antibiotics (preferably broad spectrum)
2- Tab Paracetamol
3- Anti histaminic.
4- Steam inhalation.
I hope this will help you.