A nodule is not necessarily the C-word Toes, so that's good! You're going down the road my wife Deb went through two years ago. Nodules are common and only if a certain size do they worry. If concerned enough, then a Biopsy to see if it's C. Then a lymph node check to be sure it's local to an area. If local, they can remove it. If not Chemo and/or radiation is needed.
Since her's was local (one tumor), Deb had her right upper lobe removed to remove the tumor and glad to say a two year survivor! She also smoked a long time, but quit for 12 years before the tumor showed up. Her dad at 69 and brother at 45 passed from lung cancer, so she was very sure she had no chance. I know it's hard to not worry, but keep your chin up and I wish the best to you and your family! Meds and treatment get better all the time!