I go though your Question, you have not mentioned about Treatment you have taken / not.
You probably got Throat Infection
which shows signs of Inflammation by redness
Your concern about Referred ear pain
is due to spread of infection with involvement of same nerve
1) Avoid cold drinks, cold water or beverages
2) DO salt water gargles or medicated gargles 2-3 times a day
3) Avoid Oily food & cheese-Butter.
4) Consult with Your family physician for proper antibiotics & Proper Treatment.
Get well soon.
Regards, DR JIGNESH