Hi. I am very concerned that my son may have CF. I thought maybe some of you could give me your opinion on his symptoms. We cannot get in to see a specialist for 2 months. Any feedback would be greatly appreciated. He is 19 months old and has not gained any weight in the last 5 months. He is in the 3rd percentile for weight. He has severe breathing problems and has to use a nebulizer daily. He is on antibiotics at least once a month for bronchitis. I have been told that he has asthma and he has been treated for it. I am so scared and confused. Thanks in advance.