What could these symptoms mean?

Last night I noticed my throat got a little scratchy and sore. I though that it might go away after I got some sleep. This morning when I woke up, it was still there. So I gargled my mouth with warm salt water and it only relieved it temporarily. Now I'm having these small constant burps and the chills. My stomach also has a little nauseous feeling. Also my body is sore. What could this be and how do I get rid of it?