CF patient here, I'm 19 and take myself to clinic for check-ups. Let me assure you, it is just as stressful for the patient as for the parent! The week leading up to the checkup is always a very stressful time for me. Talk of tubes is the scariest--I've avoided them so far. The doctors want you to gain weight all the time, that is mentioned every visit and will never not be mentioned--I've come to simply expect it. Sometimes I wonder why I even bother going for checkups when they simply say the same thing every time, but I am part of the study in Madison so it's good for them to get my height and weight and PFTs and blood...