Difficulty Swallowing? HELP.?

So. A couple of days ago, I started experiencing trouble swallowing my own saliva. Not foods or anything; Just my saliva. My throat is extremely dry and so is my mouth. My tongue is white & it feels as if there is something stuck in my throat. Also, it feels as if my throat with clamp shut while I'm swallowing. At times, it feels like I have no saliva. Could it be a sore throat or something serious? I need a good answer please!