Thank you for your query.
It seems that may have
Laryngitis (infection of the voice box).
3 days of shivers and aches indicates a likely bacterial infection.
I would suggest antibiotics, antipyretics (to reduce
fever), pain killers (district gargle), voice rest and plenty of fluids.
I recommend seeing your physician as you will need a prescription for the above.
In the meantime, drink plenty of warm fluids, gargle with warm saline water, try to rest your voice (do not strain to talk), plenty of rest.
Take some
vitamin C, either as supplement or In food (helps to heal and fight infection). If you have
gastritis, skip the vitamin C.
Hope this helps, wish you a speedy recovery.
Please let us know if you need any clarification.