Thank you all so much for replying. It really has made me feel so much better to read all your replies, and I feel a bit better informed.

How do you all deal with the overnight fear factor? I mean, they said in hospital that asthma can come on really quickly- I feel like I want to just watch him all night to make sure he is breathing ok. As it is, I have the monitor back on, which I haven't used in a really long time. It did NOT help when I googled this only to read an article about a 5 year old who died in his sleep from an asthma attack....