This may be normal
Everyone experiences the "nasal cycle" in which structures inside the nose called "turbinates" alternately congest and decongest.
This usually occurs every 3 to 4 hours. Usually, as long as one side is open it does not present a problem. I do have patients who become fixated on it and it drives them to distraction. In these patients i try steroid sprays, decongestants and even turbinate surgery.