Lung function during pregnancy

Hello everyone this is my first post here. I've found lots of info here and now would like to ask for some help. My wife and I have been together for over 5 years now and she happens to be the lucky one to have CF. We have a 2 year old son and when we were blessed to find out we were having a baby, lung function was about as high as could be. This time however, I think we are about 15-20% off of peak lung function. For anyone else who has CF and has been blessed with a baby, is it possible to increase lung function during this early time of pregnancy? With our son, everything went as smooth as can be with only 1 hospital stay and my wife was able to carry full term. We wish for the same results this time around and any help would be appreciated.
Source: Cystic Fibrosis Pregnancy Forum - Category: Respiratory Medicine Authors: Tags: Pregnancy Source Type: forums