No apology needed, I don't come here for sympathy.
Who gave you this diagnosis?
Did they not explain metastasis?
Metastasis is when it spreads to bone.
Chemo will probably come first, 6 cycles for 18 weeks.
Then radio 3 months later. Normally for a month.
Your health professional/consultant should be explaining all this to you?
Not some guy on a forum!
You should be able to travel again after treatment.