"
Anyone know anyting about colon cancer?"
Yes, but maybe you shouldn't go there yet!
I don't know how old your mom is, but colonoscopies are routine after a certain age, and are very helpful.
Sometimes I think the Internet is not such a good thing for a person with anxiety.
IF your mom gets diagnosed with something such as colon CA, then you would have plenty of time to do your research. Why don't you make yourself a promise that you won't research anything until you know for sure what to research?!
A counsellor once taught me that if you're going to think the worst in every situation, then you should force yourself to "think globally." In other words, if you imagine the worst happening, then you
must give equal time to "the best" possible outcome. If you're worried about a colon cancer diagnosis, make yourself give equal time to imagining a clean bill of health for your mom.
Why do I always find a new worry? 
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