Hello and welcome,
Thanks for writing in hcm forum,
The throat and ear pain associated with difficulty in swallowing ,headache are symptoms usually associated with pericoronitis due to impacted wisdom tooth
which is erupting.
These may be due to viral pharyngitis
Please do visit your dentist
and get your oral cavity as well as TMJ examined.
If there is impacted wisdom tooth,it has to be either extracted or flap overlying tooth has to be removed.
Also visit an ENT specialist
and get your ear,throat and pharynx examined and if infected,take antibiotics and analgesics.
Hope this helps.