year ago got a ill stuck in my throat, started to get lightheaded.. I am still getting this feeling all of the time. I cannot eaqt much, it doesnt feel like the food is going down, I get a little relief when I BURP, at other times it feels like my throat is tight and there is a lump in it, this has scaared me to no end as when this happens I get very lightheaded and feel like i m going to pass out...HELp what is wrong with me