I know that your question was directed at CFers, but as a spouse to a person with CF I think that I have something to add.
Since CF is genetic I had a genetic test done early on to see if I was a carrier. Knowing that we would have to consider whether I was a carrier, etc., has never been an issue. I don't remember having a "talk" about "you are going to have to get this test..." it was just something that I knew we would need to considered, etc.
We have thought a lot about the different options available, including in vitro and adoption. Right now we are torn between adopting an older child in foster care and just not having a child at all. It is a very difficult decision for us because we know going in that the child will have to deal with his/her father having CF and all that comes with that.
If I had been a carrier, there is no way we would even consider having a biological child. Those risks are just way too high. And there is no way to be 100% sure since not all of the CF mutations have been found. Even with the full Ambry panel, there is a 1/1200 chance (I think that is the right number, but somewhere around there) that the person will still be a carrier. So, the odds are pretty good that you aren't a carrier, but not 100%.
So, yes, it can be done. But, it is a really difficult decision for most people to make since there are so many things to consider.