Girls, who have a runny nose but also mucus builds up in their nose? C…

Girls, who have a runny nose but also mucus builds up in their nose? Can you tell me how to sleep so that it doesn't get swallowed? I have a direct flow down my throat and it goes to the baby, he jumps from happiness that the mucus is probably sweet, in short, I don't know what to do, the saline solution does not rinse out enough so that the nose is normal, and the mucus is needed by the body because when the nose is completely dry I can't breathe, so I sleep under a humidifier, and with an open window