I don't know if there are really any words to comfort you at this time. All I can say is to pray. Pray for healing. Pray for comfort. Pray for guidance. Pray for peace. Find comfort in the One who created us. "Trust God with all your heart, and lean not on your own understandings." (I don't recall the reference).
Reading this made me crybecause it hits very close to home. My husband was diagnosed with leukemia when he was 17, and went through 2 1/2 years of radiation and chemo. This was before I ever met him. However, I still have that thought in my mind...What if it comes back? What will I do without my husband? What will my son do without his father? Even though he's been in remission for almost 8 years, and done with treatments for 5 years, that thought is never far from my mind.
My husband is also not a very emotional person. The only times I've seen him real emotional was when our son was born, and when memories of having leukemia come back to him. It was the hardest thing he ever went through. But he made it, and he is stronger now because of it. I know the thought of getting cancer again scares him. But he doesn't live his life in fear. He lives each day and loves with all his heart.
If you are a member of a church (and even if you're not), go to your pastor and ask if there are any support groups, or counseling. They should be able to help you, even if it's just to listen. God takes care of His children. He knows how scared you are, and He will be there with every step you take.
God bless!
B.<><