Hi, I agree with Cath, it's quite sensible to think about your funeral from time to time. While going through treatment we have very little control over our lives so it's nice to plan something.
However if it worries you, and I guess it must or you wouldn't be raising it hear, counselling is often helpful. I found I could say what I thought to the counsellor, whereas often with family and friends I felt the need to put on a positive face. So it was good for me to talk to a professional. I cried a lot sometimes and when I apologized she laughed and said that she was a cancer counsellor and used to people crying. Crying can be theureputic I find.
Best wishes Karen