Hi Grandmaworrywort,
I am sorry about your grandson, but try not to jump to any conclusions yet. I can totally understand as I also worry alot and give myself alot of what if's. I am currently working on it though and can tell you one thing that I try to tell myself is to look at the odds. Chances are at that age it would not be something like colon cancer. You are also taking action which is good --the Dr took the scopes and I am assuming you will have the biospy results back very soon and will hopefully know what you are dealing with. I started reading Dale Carnegies book on how to stop worrying and he suggests to live in daytight compartments. Meaning try not to forecast ahead...just deal with today and today only. I know, easier said than done.
As far as talking is concerned, I know lots of kids who are late talkers especially boys so I wouldn't worry about that now.
I am glad you are addressing it w/ a Dr. Pls keep us posted and we are here for you!
B