Newborn has 2 mutations-I1366T & DelF508..HELP?

So I received a call that my newborn has two mutations today-I1366T & DelF508. Her IRT was 97.99, and newborn cutoff is 67. I was told that they would refer her for the sweat test at Children's Hospital and I'll be hearing from her Dr and C.H. soon. *crickets* Soooo....in the MEANTIME, what am I supposed to think? Of course, I googled it and the information I got was "if baby tests positive for 2 mutations, baby most likely has C.F.". We have 5 children--#3 is a carrier of DelF508. Not sure about 1, 2 and 4. I never got any information after #4's birth so I assume she is not a carrier... Is it possible that even with two mutations, she won't have it? Also, is it possible that both me and my husband are carriers and didn't pass it on to any of the other kids, or can pass on just 1 mutation to #3 yet pass on both to #5? Very concerned and hate having to wait now...any info is much appreciated.
Source: Cystic Fibrosis DNA and Mutations Forum - Category: Respiratory Medicine Authors: Tags: DNA and Mutations Source Type: forums