Jen, we both share similar boats, I'm just farther out to sea.
My Dad is a wise man and told me early on, never to apologize, it shows weakness. So rarely do I find a situation that warrants a true apology as his words ring in my ear. NSCLC is so different than SCLC as it is a cancer that can deem sudden death. It's fast growing, we may be okay one week and lose our loved ones the next. I know this is not positive news and from all you have learned in your research, you know your concerns are well justified.
We have to think positive, as Mr. Bloch said: "worry is like a rocking chair, it keeps us busy but get's us no where."
Hang in there and keep praying for positive scans. I'm doing what I can to keep my hard-*ss Dad alive. Two and a third years into it, so far, so good!