Less breathing. How can i rule out?

Hi, since 3-4 months i m experiencung something in my left throat which is hard i feel it while swallowing everytime bcoz of this i am experiencing that i am slightly suffocated on my left side of the body. I have touched that hard thing in my throat by my finger but ENT's said there is nothing but slowly slowly its leading to different issues. Even if i try to deep breath i couldn't. I had lungs xray it was normal, i also got Tmj problem after this thing in my throat. I am really confused if it is something very bad. I do feel heavy in left side chest. Can it be cartoid blockage or something which might have narrowed my arteries or throat might have formed something like debris or stone and i feel it while swallowing & touching? How can i rule out ?