Adjusting to bad news, staying hopeful, changing habits

Deep breaths!
You're on your way to having definitive direction for treatment and or surgery; whichever they decide comes first
Deep breaths!
Take hubby or someone to next appointment as there's lots to take in.
The most important thing is it has been detected.
As to diet and smoking....that will work out in good time.  
At present try not to google and second guess what may or may not happen.

Take care