I've felt this way during the onset of a cold in the past, from bad allergies also. Fluids, vitamin C - ask your pharmacist which medicines are best to treat those symptoms, visit a doctor if you have a fever.. I wouldn't worry.
You might try gargling with warm salt water. And you might need to see a doctor, it could still be considered a sore throat. Could be strep.
Do you take any pain meds or medications at all? You are suffering from extremely dry mouth. I had this and my tongue hurt so bad I would sit around with it sticking out. It felt better. I now use Biotene mouth wash, and no more problems. I was miserable, it felt like a chemical burn or something.