The colonoscopy itself is easy as you'll be sedated. Try not to think about what they are looking at. It's their job and they look up plenty of them every day

It's the stuff you need to drink the night before to clean you out along with the fasting and not being able to drink anything that was hardest for me.

Also to make it easier on yourself try and get the earliest appointment you can also because when I had mine done my appointment was for 1:30pm so I was already so STARVING by then I was feeling sick. Then because they were running behind schedule I didn't get in till 5pm. I had a headache and was delirious (was kneeling on the floor crying with my head on the seat in the waiting room) and so dehydrated I had to be put on a drip.

All for an inconclusive result that they decided was the result of a virus! Sorry for the rant.

All the best