Unhealthy but happy but also probably little time

Nevada is pulling Sharron to get to me because I have brought a 1/2 stick of string cheese.  A year ago on 10/10/14 he had surgery for rectal cancer. Two maybe more have grown back.  He is 11 years old, is a lot of fun, somewhat more moody (since we lost Lily), he enjoys life but time maybe short.  Today the 19th is the 1st day he has not been able to have a BM today & has pain when he tries.  Please pray if his time is short that it won't be painful