welcome to HCM
By reading your symptoms i think you are having middle ear infection
.Its better to check from ENT.
Eustachian tube is connected to nose and ear.So Nasal block or in Rhinitis
this infection can spread to ear.
As i am an Ayurvedic doctor my advice is to take Ayurvedic drugs like Swamala,Chavanprash to improve your immunity.Avoid junk food, curd, ice creams,dust.Also dont scratch your ear unnecessary.