Girls, hello everyone! I wanted to ask if anyone has experienced this,…

Girls, hello everyone! I wanted to ask if anyone has experienced this, my child has a cough that doesn't go away, it's rare but moist, he expectorates, but as you know from your own experience, he can't, his lungs are clear, breathing is difficult, we did an X-ray on Monday, it will be ready soon, there's also a runny nose, he's been going for a wash. I don't even know what to do, they aren't prescribing any treatment, only a pulmonologist, we're 9 months old.