Always Worried

I had similar treatment nearly 5 years ago and as socoda says, your fears are very natural. Young children too are fearful of what is out of the ordinary, and they may find they relax a bit after the active part of treatment is over (as will you). One thing you can be sure of is that anxiety (yours or your family's) won't help anything. A good counsellor can help you focus on reducing your fears but may also have some good advice about helping your sons through this period too.