empty nest, solo, and stage IV cancer

I thought that when she left for her first year of college I would have more time to travel and run marathons. Unfortunately a cancer diagnosis in September'08 left me running a very different kind of race. I had a clear PAP in March, diagnosis came out of the blue, Minimal symptoms I folowed up on. Then external and internal radiation with neoadjunctive chemo, followed by surgery. During radiation a subcutaneous spot on my upper back that had been questionably hot on PET blossomed, I became a stage IV diagnosis. It was successfully treated with radiation.
Following surgery did six rounds of chemo spaced every three weeks. Follow up PET scan end July showed all sights resolved, but question of new lung nodule 5-7mm that did not read hot. CAT confirmed presence. Too small for interventional radiology to biopsy. Have always shown three other nodules that are not hot and hane not changed size, 2mm, since initial PET in August'08. I realize lung nodules are caused by things other than cancer, but this is frightening. Thoracic surgeon might be able to get to new one for biopsy. I want to wait until after I drop child off at college. My oncologist will follow with another CAT prior to leaving to drop off child and visit her brother on same coast. If there is noticable changes will make trip a lot shorter.
Then back to cope with an empty nest, too much time, and cancer. I am feeling very overwhelmed by all these changes, and reaching out to all of you for support and suggestions. The Today Show just did a piece on empty nest, and I realized the cancer has impacted how I will be ale to deal with this.
Thanks for listening.