My 25 year old daughter who is 2 months pregnant just got her blood tests back today that says she is a carrier of CF. She ha sa son that is almost 6. Now what I am confused about is there has never been any mention of CF before. I have 5 children and this has never came up before, I am confused as to where this has came from. Also I have never known my father and so I am wondering if this could of came from his side? Thanks Annie