Oh Nina, I hope that Jackson feels better soon! I hate to see kids sick, breaks my heart.
I was a young parent, having my first son at 20, my second right after I turned 22 and I am also an older parent (IMO) as I had my daughter at 30. I think the only advantage to having kids younger is that simply you are younger. Not always a good thing. I personally have been raising kids for over 20 years (I am 33, I raised my nephew from the time I was 12). I think there are great benefits from being a bit older when you have kids. You have more patience, you have more life experience in general, you can be calmer, etc. Though this obviously does not apply in every situation.
As for Jackson's illness, have you taken him to a Natropath? I am just wondering cause some times they suggest eating honey from your local area that has NOT been pasturized. This is supposed to help with the allergies that come from the pollens etc.
Good luck,
Diana