Hello and Welcome to ‘Ask A Doctor’ service.
I have reviewed your query and here is my advice.
As per your query, you have sorethroat, 
fever and swallowing difficulty which is due to inflammation of tonsils leading to 
tonsillitis. Need not to worry.
I would suggest you to maintain complete 
oral hygiene and do warm saline gargles. Avoid intake of 
cold beverages and sharp spicy food.
If symptoms keep on persisting, visit 
ENT specialist once and get it examined. You should go for blood and throat swab test and get it examined and start treatment accordingly.
Take proper course of stronger antibiotics along with anti-inflammatory medicines after proper prescription. Take throat lozenges. 
Hope I have answered your query. Let me know if I can assist you further.
Regards,
Dr. Harry Maheshwari