Sorry to hear your DS is sick, but relieved to hear he was able to come home after his hospital visit. That wheezing is horrible isnt it?
I would take DS back to the GP just for another checkup and so his GP knows about what happened yesterday. I have only had little V come down with a respiratory problem 4mths back, but it was bronchoilitis with pneumonia which was the problem. Although she was in hospital a couple of weeks, I was told due to what she had been through during her stay in hospital that there is a high chance that she will develop asthma. So fingers crossed she wont. However since leaving hospital she hasnt been on anything, however it has only been 4ths ago. She is starting to come down with the flu again, so am always checking to make sure I dont hear any wheezing, as she will be straight back up to the hospital if she does.
I hope your DS, doesnt end up with asthma, all the very best and lots of get well vibes to your DS. hugs