heya, i get the same thing every time i am stressed! i end up with a sore throat and then it turns into full blown tonsilitis (sp) even though i have had my tonsils out...twice!!!
but i find that comomile tea with lashings and lashings of honey is very soothing and it is non drowsy and it acts as a natural numbing agent!!
Ecinachia drops in a bottle of water also waorks to help you feel better throughout exams, especially when you put a bit extra in, it kinda makes you lightheaded and focuses your concentration on the exam and only the exam, i have it everyday to help me concentrat!
hope you feel better soon!!