Hi M,
I think the beginning of a cancer journey is the worst, awaiting answers to all the unknowns is very difficult and affects all of us differently.
My husband similarly didn't want anybody to know about his investigations and cancer diagnosis initially. I personally found this extremely stressful as I felt I couldn't access the support I needed from friends and family. I did in fact let my work colleges know and they became my support. My husband did eventually open up to others when he had got his own head round his diagnosis and on a plan of treatment.
My kids were 12, 16, and 18 when Bob was diagnosed and we agreed they should be told everything from the start but were requested not to discuss with others( I think each of them may have chatted to a close friend). My 16 and 18 year old were both at 6th form, dealt very maturely with all info, and have done very well with there achievements. My 12 year old struggled more,perhaps she had added proB's of pubity. We told her all the facts but in a more simplified manner and answered any questions she asked honestly but I don't think she really understood the implications of what we told her. She's 16 now and doing ok and on an even keel (if 16yr old can be on an even keel!!Ha ha)
I dont think there's a right or wrong way of dealing with cancer worries, all our cancer situations are different,all our kids are different and however you deal with your situation will be right for you.
Hope all goes well for you, enjoy your break.
Lesley xx