We need more information. Do you smoke? Are you on medications? Have you been around dangerous chemicals?
A few weeks ago I puffed on my last cigarette. See, I would just have maybe 4 cigarettes a week. Yes, sometimes only one cigarette a day.
I got a big scare a few weeks ago when I woke up with my throat feeling exactly how you describe it here. I couldn't even get back to sleep it kept hurting so much. I was freaked out, got out of bed and started looking up throat cancer on the internet. I haven't had another one yet, I'm too scared.
I'm just really really sensitive to foreign things in my body that aren't supposed to be there.
Maybe you are too?