hi! i ve been having a tough time to swallow for about a little over a year. it doesn t hurt it just bothers me. now it acually feels like its gotten worse. its like i don t get enough air though my passage way, not to mention it takes a while for me to swallow siliva. i feel like its somewhat swollen and as if my throat is going to close up. i ve been getting blisters recently in my tongue and on my throat. what can it be?