Welcome to Mayo Connect @lori7034. While the members on Connect are not doctors or medical staff, many of us have been through what you are going through. We know how stressful this time can be, and it's normal to be scared.
PET scans show metabolic activity. Cancer, infections, inflammation, etc. are metabolically active in our bodies. The standardized uptake value (SUV) shows that level of activity. The uptake on one of your lymph nodes is concerning.
Quitting smoking can only help you going forward. That's a big accomplishment.
What type of doctor are you scheduled to see? Pulmonology? Oncology?
Does your medical center offer an appointment waiting list where you may be able to be seen sooner? You may want to call and see if there are options for an earlier appointment.