Dear doctor. I've had a sensation of something...

Dear doctor. I've had a sensation of something stuck in throat. When i drink water it bothers me. I went to 4 ent doctores 2 did and scopy through my nose down my throat. And said its acid reflux. I didn't feel any acidity . So my gastro said probably silent. It's been 2 months and half now and yesterday it got worse now when I swallow my saliva i feel like the bones near the Adams apple dies this clicking sound. And when I smoke it gets worse. So I reduced smoking but still it bothers me when my mouth get a dry. I went to the ent doc again and he didn't insert the scope he just looked and said its still red. He said could be stress and smoking. It's not globes if it's inflamed. And sometimes it hurts just a bit when I press the outside of my throat. Before all that started I tried to smoke the e cig that u put e liquid in. Some of the e liquid went in my throat. I told the doctor that and he said it wouldn't keep it throat inflamed this long. Again acid stress and smoking. I'm worried they missed something. I'm worried it could be cancerous and it's taking too long to go . What could it be