throat cancer?

you still don't or ever had cancer

No one here can do anything for you.

You need to go back to a doctor for a real medical opinion.

First let me say that (and you already know this) worrying solves nothing, changes nothing and fixes nothing - it is literally a waste of your time and energy to worry about anything.. when we have a problem of any kind, focusing on the problem keeps you stuck in that problem. What FREES you from the worry is to focus on the SOLUTION to the problem, or to set a goal to overcome that problem.. focusing on the goal or solution is positive - the opposite of worry, and this, if nothing else, will keep you feeling positive (happy) and not worrying.. 

It seems to me then, that your solution is to see a doctor - it's been over a year since you talked to one about this? Now, I am not one to rush off to the doctor's myself.. I like to do a lot of research, try to find out what is possibly the problem, then try a few things, and then, if nothing changes, see a doctor.. but in the case of swallowing, this is pretty serious.. so, don't waste too much time before finding a solution.. 

Have you tried drinking more water? There are so many problems associated with dehydration! 

Cancer would have showed up. It's obviously nasal drip I had it for weeks after a cold.

Use a nasal spray.