It would be good for you to choose another user name.
Your symptoms are exactly like mine, but it is my left nostril that is affected. And I can remember these symptoms since I was a teenager more than 40 years ago. I went to an ENT 2 weeks ago. She thinks I have vasomotor rhinitis. Look that up. You'll see that you have the same. Anyway she gave me Atrovent nasal spray. That's the stuff that asthmatics use for their lungs. Totally worthless. I'll see her again soon.
Once upon a time, someone said that when these kind of problems occur at night, it is due to mold or fungus.
Mine always occur about an hour after dinner and last until morning, giving me only a few hours sleep. This has gone on for a lifetime. That's why I finally gave in and went to an ENT.
Good luck. Let us know what you discover. But do Google vasomotor rhinitis. I kind of means that you are not allergic to anything, but pollen, mold, dry air, and many other things irritate and can cause inflammation to your sinus membranes. Sounds like allergy to me. We'll see.