The symptoms as mentioned in your post suggest that you might be having Otitis media
(infection/inflammation of the middle ear)...most probably Serous Otitis
In this condition...the middle ear cavity gets filled with serous fluid, resulting in bulging of tympanic membrane (eardrum) & interference with transmission of sound resulting in conductive hearing loss
Moreover...there is a connecting tract (known as Eustachian tube) between the middle ear & nasopharynx, obstruction of which can lead to ear pain by un-equalisation of pressure between the nasopharynx & middle ear.
Local examination of the ear along with tests like Audiometry & Tympanometry
will help in clinching the diagnosis & determining the degree of hearing loss.
Depending upon this, further steps for management can be taken.
So...it will be better to consult an ENT specialist
for further evaluation & exclusion of other causes of hearing loss.
Wishing you a Good Health.
Thanks & take care