Hello @sienabellisima and welcome to the lung cancer support group on Mayo Connect. It is certainly natural to be worried about any nodule showing up on a CT scan. Following up in six months seems like a reasonable response by your doctor. If the nodule has grown, then more diagnostic work can be done. There, of course, is always the possibility that it will remain the same. This type of nodule can be the result of previous upper respiratory infections. Here is a link to some information:
https://www.medicalnewstoday.com/articles/ground-glass-opacity#definition
Many members of Connect, including myself, have had this finding show up on a CT scan. I would encourage you to read these posts. Here is the link:
https://connect.mayoclinic.org/discussion/groundglass-opacities-within-the-lungs-what-does-it-mean/
In the future, please post about your concerns in this support group. It will be more helpful to you now, since lung cancer has not been diagnosed.

Have you been having symptoms of lung problems, such as shortness of breath or a chronic cough?