Hi everyone I am writing for some sign posting or views so I can make a decision what to do

I am in my 70s, regularly having g taken fit tests all coming back with negative results.  ...there is no history on my side o family having bowel or any type 

I have been having  mild pain's below my right rib cage and arm  for a few months , nothing to stop me doing activities and put it down to old age and needing a new mattress. However a couple of weeks back I noticed bright red blood in the water of the loo before flushing. 

With the pain to my side,  another problem below , the blood was the catalyst to phone the surgery,  and see the doctor, . On seeing her,  I had the couch treatment,  nothing could be seen other than some piles, but I was given a blood test for prostrate,  among others,  a fit test to do at home and a scan for early next year 

My prostate came back fine,  but my platelets and white blood cells below the recommended levels.  Unfortunately my fit test is positive.  The doctor, referred me for a urgent colostomy  and within a couple of days these has been booked to take place just before the new year,  for which I am grateful to the doctors and hospital,  especially in this day and age..

I came on this site to find out a bit more,  mainly because I have not told my family anything,  my  reasons for this was

1..I read (and told) 1 in 4 get diagnosed with the other 75%having negative results for cancer.

2. My wife and children are quite anxious people,, with one of children has suffered with depression and back on his feet after years of not working 

3. Being just before Christmas I did not want to put a dampers on what might be my last Christmas with my whole family.  I know I would have to provide some super lies for the preparation straight after Xmas day.

4. My reading whilst above 10 , is still way below the three figure readings given on here, and having a clear test only about  14 months ago I am hoping that it's something else 

Having read through the posts,  I am wondering am I doing the right thing in not telling, am I being selfish and controlling by not telling my loved ones? 

Any thoughts would be appreciated,  and  how or when to disclose what is happening to me to family who are of a anxious disposition