Also, don't rule out the possibility of positions in research and/or teaching! I don't have CF, but I am a parent to two children with CF. One thing that I am grateful for is that my profession (college professor) gives me lots of flexibility to work around clinic visits, hospitalizations, etc. If you went into medical research, even CF related research, you would not necessarily have the daily exposure to illness, but would be on the front lines of helping people.