No cancer is an automatic death sentence. There are lots of people on this site that have had lung cancer, beat it down and are living mostly normal lives now. Be patient, try not to be scared, someone will be along to answer more for you in a little while.
There are people here that were stage 4 many years ago and told maybe 6 months to a year to live, and they are right here with us laughing at those dr's.
Never, never, never give up!