I understand being nervous when you see something that appears to be growing, but let's try to put it in perspective. First of all, nothing indicates the spot has increased in density and now appears to be a nodule.

As for size, we are talking about an increase of two millimeters - just over 1/16th of an inch. At its largest point, what is being observed is 4/10 inch long and less than 3/10 inch in width, about the size of a sunflower kernel.

Since it is not solid, it can look different depending on the angle of the image, whether you are inhaling or exhaling, if you have mucus in your lungs and a lot of other variables.

Between Radiology and the pulmonologist, the scan is read by at least 3 doctors accustomed to looking at lungs.

I know it is harder to do than to say, but I think you need to arrange to talk to the doctor, listen carefully to their explanation, then try to quit worrying.