Thanks for using Healthcaremagic,
You are having sore throat
with blocked nose and may be all started due to viral infection and allergy
but they can get easily infected secondarily by bacteria.
You should visit a ENT surgeon and get examined with X ray PNS to see if sinus
are also involved,there can be DNS(Deviated nasal septum
) or any other finding like polyp may be there.
Your treatment would need proper antibiotics,analgesic
and anti inflammatory drugs with decongestants and anti allergic.
Nasal blockade can be relived by nasal decongestant drops or sprays.
Steam inhalation and keeping well hydrated helps.
Hope this information will help you
Dr.Akhilesh Dubey M.D.