Did the doctor offer antibiotics.. Did you accept it? Usually it start with a virus then body immune system goes down and a bacteria acts as a secondary infection and cause mayhem
I think you should go see the doctor again, especially since he's showing another symptom which is cold sweat. It's always better to err on the side caution.
During the cold sweat, is there any fever? My kids are sick too. Doc said there is a lot of flu virus around
Jorelle Aw