Thank you. After your reply, I made an appointment with an ENT specialist, and have since gone to that appointment and a follow-up. He diagnoses me with a deviated septum and chronic sinus infection. After a round of Augmentin and daily use of Flonase and a sinus wash, I am feeling much better. Just wanted to say thanks for helping me find the courage to go to the doctor!
You should have a direct re-examination of the area of your nose, above the turbinate to rule-out a tumor, benign or malignant. This can be accomplished with the doctor's use of a fiberoptic laryngoscope. If the turbinate blocks access to the upper/posterior part of your nose, that area can be examined by inserting the instrument, either through the mouth or through the other nostril. You should also have a CT scan of your nose and sinuses.
Your reluctance to go back, without insurance, is understandable but you must have this evaluated and treated. This could be a cancer but whatever it is, you need relief from it and the peace of mind that would accompany the relief.
Also forgot to mention the pretty much incessant itching. This problem seems to be worse on the exhale than the inhale, and is absolutely maddening.