Welcome to HCM,
You are suffering from Acute infection of throat usually it is viral in origin but may get secondary bacterial infection and once larynx
is involved change in voice may occur.
helps to reduce body ache
,a hot saline gargles twice and thrice will relive congestion in throat.
If discomfort is more consult a ENT surgeon and take proper decongestant and if infection is there a course of antibiotic may be required to cure your problem.
If voice is hoarse a voice rest is also advisable.