hello and welcome to HCM forum,
i would like to inform you that the pin point size hole is normally present on both the sides of your upper back teeth region, if pain and swelling are associated with it then it needs to be checked .
In your case, i believe you will need to see an ENT specialist
for sore throat
i advise you to perform warm saline rinses(3-4 times/day) for 3-5 days.
if the problem does not resolve then kindly visit an ENT doctor.
i hope i answered your query,
i wish you good health.