Don't worry too much! If the worst comes to the worst, there are plenty of doctors (Chinese and Western) who are capable of curing cancer! Will power is very important too, for the sake of your beautiful daughters and your darling husband, you must stay positive!
If you need recommendation, I am more than happy to introduce you to Chan Pak who is known to be good at curing cancer!
I also have 2 girls, and i was diagnosed with thyroid cancer in end of 2005. After surgery and radioactive treatment, i only go to visit doctor every 6 months, doing regular x-ray and blood test.
Life is no diff from before... Only I won't eat bird's nest anymore.
At first I was also very worried about my girls .... Pray to God and He is there to help you.