Another thing you might want to have checked is the level of Magnesium in your blood. Most folks do not have anywhere near enough in their system and a severe lack of Magnesium can result in a sensation such as you describe. Been there... had that.
I also have the same thing, you have LPR (Laryngopharyngeal Reflux) here is a link to where you can read about it. I have had my feeling in my throat since August of 08, but I also have some other stomach issues going on that hasn't allowed it to heal. good luck
http://heartburn.about.com/od/gastrictractdisorders/a/whatis_LPR.htm