Just looking for some thoughts!!

My son is four years old. Since the day he was born he has stayed sick it seems. The night he was born, he almost died because he had so much stuff to build up in his lungs. Since that day, he has kept sinus infections, bronchitis, ear infections, chronic cough, etc. When he gets sick, it stays for weeks and takes several rounds of antibiotics and steroids and breathing treatments to clear it up. He has had two sets of tubes in his ears and had his adenoids taken out. I have requested the test be run to check for cystic fibrosis. Am I completely crazy? Does his story sound familiar to anybody elses?