Wishing the very best. <img src="i/expressions/rose.gif" border="0">
My daughter was not dx'ed until she was 7.5yrs old. We knew something was wrong with her for several years but CF never once entered my mind... the first it was mentioned to me was by the dr who ordered the sweat test, so I had only 5 days to think about it before her dx. Others here wonder about this dx specifically and chase it for years- but in any case, there are a lot of kids (unfortunately) that are dx'ed on the late side, esp since many states have only instituted newborn screening in the last several years. Her primary symptom was failure to thrive (she weighed 44lbs and was 46" tall at dx) and digestive stuff like bulky greasy stools, etc. She had more resp. stuff than her brothers but it wasn't a glaring thing (i.e. no hospitalizations like many kids with cf.)
Our sweat tests came back quickly too (same afternoon when done in the morning.) It's SO good to not have to wait on this, vs. some tests that take so long. Sweat tests are not foolproof, though, so I would encourage you to try and get genetic sequencing; i.e. Ambry Amplified. Not only will that help clarify her dx if the sweat test is inconclusive, odds are they will want to know what her mutations are anyway if it turns out she has CF.