I agree, the worst thing is the unknown. Once you know either way you can get on with it. Until then you will be looking for symptoms and that is normal.
A lot of children with cf have no signs until they're at least toddlers. CF immune systems against popular belief are actually pretty nifty. Studies have been done that showed that we produce a lot more white blood cells than most normal people. My sister who doesn't have cf I swear is ill every other week with colds, tonsillitis etc. My brother and myself who do have cf hardley ever catch a cold. So high chances are it will just be a normal cold he's had and won't have been a big problem so try not to panic yourself with things like that (it's hard, I know, I am the biggest panicker).
A lot of the time cf can be seen early with bowel problems. The problems can be seen on ultrasound when still in the womb. Though not all mutations of cf present with any bowel problems so that isn't always the case.
Hope the appointment tomorrow goes well. I hope your son doesn't have cf, though just to take a good side from it it's been caught super early. The earlier cf is diagnosed the better.
Moderator of the Cystic Fibrosis forum
Hey, I'm Gem with CF, age 28 and diagnosed at 2 years old. I'm no expert but having CF myself I've learnt a few things along the way.
Diagnosed with: Cystic Fibrosis, Asthma, ABPA, Clinical Depression, Mild Liver Cirrohsis, Mild Osteopenia, Erythema Nodosum, Myopathy