Can a nodule grow big enough in 6 months to cause chronic coughing? I know 6 months ago when I was first diagnosed it was only 4mm but I m worried that this cough is something more. It started as Bronchitis but is still here and my lungs are clear and my x-ray came back clear. I feel like I have something stuck in my throat and ant extra activity (even just talking) causes me to cough, sometimes so bad I have a hard time breathing. My doctors believe its my asthma but I breath just fine. I ve rarely ever had and issue with my asthma over the last 20 years and now all the sudden I cant stop coughing. Please some insight!