CF without any symptoms

Hi! I just got my DNA health results and it says that the test found two DNA differences that together are linked to cystic fibrosis. I'm in my 20s and I never experienced any symptoms or cough or anything like this. I thought that I might be a carrier but the DNA website says that there is a small chance that someone with two DNA differences may not have CF. Of course, I will go see a doctor but I just wanted to ask you guys if it's possible to have no symptoms at all or if they can progress later in life. Thank you so much for your opinion or advice! via /r/CysticFibrosis https://ift.tt/34dvr2k