Sore Throat but Only in One Area

[FrozenMonkey007]

OK, so I've had this pain in my throat for the past two days and I have an idea of what might have caused it but I'm not sure. 2 days ago I started running again after a long vacation that I ate a lot on and got pretty out of shape. After running for about thirty minutes I stopped because I was struggling more than usual. I also felt sick and I sort of threw up except nothing came out (it was in the moring before I ate breakfast and had only had water) when I went to throw up. I don't remember if the pain started immediately but I've had this pain on the left side of my throat ever since and it makes it hurt to swallow. I've had no other symptoms so I'm pretty sure I don't have a throat disease or related disease but, I could be wrong.