Hi, I have been living the past many months with my nazzel passages becoming clogged on one side or the other, and on occassion both. One is always open enough for breathing, however not very comfortably. It happens at night most the time just I get ready for, or into bed for the night. I often use a nazzel spray that opens it up but Im concerened about the frequency I use it. When I do use it, its plugged one one side in the morning almost all the time. Allgergies??? (never had them in the past.) Please advise best you can, and thank you very much!! Larry (59 y o)