oh goodness yes I felt the same way. I am now 19 and still have my monents! I have alwyas been very heavily effected by CF and have had several resistent starnds of psudimonis (sorry I don't remember how to spell that) since I was 3 years old. I grew up with the hospital being a large part of my life, alwyas 2 week stays, and I have never spent more than 4 and a half months strait out of the hospital. eveyone knows I have CF and alwyas has, it isn't so much that I didn't like talking about it, but that I didn't like peoples reaction. at that age when you tell people about it they tend to over react or not care. the hospital can be a very depressing place, for me the third day I am there is always the worst of them all. as much time as I spend there I can't say it gets much easer, but as you get older you learn that is just a fact of you life, you learn how to get other things done while you are there, and to have minimal impact of you life. last time I was in the hosital (last week actually) I had a friend in the hospital, it was her birthday, so the 3 of us about the same age who have known eachoter for a long time, got a cake, we eat it outside because we all have differnt things that we don't want to make eachother sicker with. I spent the weeks leeding to my senior prom in the hospital as well. my mother bought me 9 pairs of shoes, and the nurses all helped me pick the ones that I should wear, mom took the rest back. the point of the stories is that you don't have to miss out on all of life when you are in the hospital, you just have to go about it a little differently. as your son gets older he will learn that and that will make his life a little easer. my advice to you is to expect him to get down, and let that be okay. CF sucks and the people who can except that be suportive and don't spend their life trying to cheer me up when I am upset are the people who are most imortant to me, and the ones I talk to when I need to talk.
best of luck to you and your son