My dad had his first colon cancer diagnosis at 54, and his second at 74; he didn't come home from the hospital the last time.
My brothers and I carry a higher risk for this cancer, and we promised each other to be diligent with our screenings. I am 64, and just had my 4th screening 2 months ago; for me, there's nothing that compares to seeing my doctors smiling face telling me that everything was good, and he found nothing of concern. This Dr took care of my dad, still remembers him well, and he truly understands my concern. I started my tests at 50 and did the first 3 every 3 years. Since nothing was found, my Dr suggested every 5 yrs, and I did actually go that long between tests this last time.
I have prepped with magnesium citrate, and will never do again. 2nd prep was the prescription based 30 pills; hard to swallow all those huge salt based pills, that also dropped my BP substantially. My Dr does not prescribe these anymore, mainly due to the fact patients have said their insurance didn't cover this option, and out of pocket was $200+. I used Suprep the last 2x, mixed with ice cold ginger ale, sipped thru a straw, followed by a sweet tea chaser. I found it quite tolerable.
I send my best wishes for a good result, and urge you to think only positive thoughts!