You probably got Swine Flu, sorry
Seriously, it may be the start of the Flu.
About 6 months ago I get the worst flu I have had in years, rarely get sick.
My throat was so sore, that to swallow anything was absolute agony, some of the worst pain I have experienced.
It was like getting cut with a knife every time I tried to swallow, even just the spit in my mouth, which kept building up every couple of minutes.
Even to sip on water was extremely painful.
Maybe see the doctor.
Get some pills or something and just ride it out.
Or, you can chose to be ridden if you prefer it that way.