Hi Tenzin, as your symptoms are indicating towards a sore throat
or acute /chronic pharyngitis
.To start with take plenty of sips of water,take some antireflux agents and avoid spicy foods. If you dont get relief then, I would suggest you to go for a broad spectum antibiotics if it is of short duration but if it is of long duration then you should go for a throat swab culture, thyroid
function test , video laryngoscopy
and X ray - PNS to rule out any involvement of sinuses.