Long lasting sore throat

[lkcsas]

I have had a very unusual sore throat for THREE weeks now. I don't feel bad, I'm not sick. Haven't had a cold, no sinus infection. Nothing. Just a continuous sore throat. Also, it is almost unbearable to yawn because it hurts in my ear so bad. It's my throat majority of the time, but when I yawn it is very painful in my ear. Not both ears at the same time, sometimes just one, but it goes back and forth. I want to know what's causing this. I don't feel bad other than my throat, it's an unusual soreness as well. It's not like a strep throat sore. It's like a throbbing soreness. I have never had anything like this happen before. Please help.