I don't know if this is respiratory or not, but here it goes. Lately, I have had this odd sensation in the base of my throat and down the middle of my chest. The only way I can explain it is it has the feeling when you get when you have run too hard. You know how you kind of have that achy, cooling feeling after you have had a brisk run? That is what it feels like, but I have not been exerting myself. When I take a deep breath, I can feel it more. I don't know if this is pulmonary or realted to my GERD. I apologize that I can't explain it better. I also have little pains from time to time on either side of my chest. Could this be an infection or something more serious? It seems to be centrally located in the base of my throat and down the middle of my chest/sternum area and kind of off to the side a bit.