Welcome to HCM,
You are having sore throat
many times it is viral in begning, but gets infected with bacteria secondarily.
Along with this you have some Eustation tube blockage and post nasal drip
You should vist a ENT Surgeon and get your self examined and proper antibiotics along with decongestants and anti inflamatory drugs may be required which you will get through prescription.
Please do not take antibiotics by yourself.
Hot saline gargle and chlorhexidine
gargle will help.
It may take up to 1 week to clear if no complications,otherwise any sinusitis
and LRTI needs to be treated accordingly.