I don't know what you're dealing with. All I can say is that, to clear the sinuses and head and throat, I gargle himalayan crystal salt dissolved in warm, boiled water (filtered water). I use about 1/2 a cup of this salt/water, take one mouthful at a time, gargle as long as possible, holding it in the throat, then spit it out. I try to remember to do this daily.
It can also be done with table salt (in water), apparently.
This clears a lot of gunk from nose and throat. It might help clear whatever is in that area, for you. Good luck. Stay positive.