I'm assuming you are doing nebulized albuterol, Xopenex or something to make it easier to breath?
Or Maybe an inhaler?? That always makes me feel better when I'm short of breath, to do a breathing treatment. I, too have heard that excercise can improve lung function and I need to get into it, but it is hard for me to get started!
On the child issue.....if I were in your place, getting winded so easily, then I would not even consider having kids for a couple of reasons. First, when your pregnant, as the baby gets larger, it starts to push up on your diaphram, making it even harder to breath. Second, babies are so cute, then you have that stage where they are crawling/walking & putting everything in their mouths & you have to constantly be on the move, making sure they don't swallow anything dangerous, etc. I just don't know if I would have the energy to deal w/ all of that and CF too! Not to mention the teenage years!!
I'm not suggesting everyone w/ CF not have kids, just sharing my opinion (which you really didn't ask for) on what I would do were I in your position.
I hope others can share what they do to make breathing a little easier.<img src="i/expressions/face-icon-small-smile.gif" border="0">