Often it feels like there is a lump in the left side of my throat and it would be hard to swallow a lot. Also, there are times where it feels like the lump or whatever moves to the middle of my throat, and it can be very painful and most of the time hard to breathe or talk,as if i was choking, and then when i swallow, its like the lump moves again, and it hurts even worse. What do you think it is? I've been to the emergency room about it once, and the doctors there didnt even help, just kept saying i was choking on food even though I wasn't even eating, and didnt even bother to check me out.