I used to get a feeling in my upper throat/back of throat that sounds similar to what you are feeling. It has been several years since I've felt it. It seems like the only time I ever had it was when eating thick cut fries. It felt like I had a wad of food stuck in the back of my throat or upper throat, even though I didn't. I usually found it to be uncomfortable and it seems like it was often accompanied by a slight sensation of heartburn. It didn't typically last long though, no more than ten minutes, possibly less if I drank a lot of water. But aside from having felt something similar, I have no further light to shed on the subject unfortunately.