Hello everyone. My son has had a stuffy nose for 10 days now, and ther…

Hello everyone. My son has had a stuffy nose for 10 days now, and there are no other symptoms of illness. There's no fever, coughing or fatigue. The nose gets stuffy periodically, which makes him breathe through his mouth. I rinse with sea water, it gets better. But then again, I might need to clear his nose 1-2 times a day. Or even every day. I don't know what this could be? The nasal spray stopped using because it was worse. Now he just uses sea water and an aspirator. We were guests for a week, maybe the air in the house is dry. And today, blood came out of one nostril, not for long, and stopped abruptly.