Could my medical problems be related to my carring of Cystic Fibrosis?

I have respiratory problems asthma, pneumonia(1 time), Bronchitis (4 times) and Chronic sinusitis even after sinus surgery. I also have arthritis and joint problems. I know I am a carrier for Cystic Fibrosis but I didn't think that carriers are supposed to have any symptoms but I am only 25 and most people my age haven't had this many respiratory problems with out other causes. Any one know anything about this?