Please don't be afraid! As a retired nurse, I can attest that our #1 priority is you, the whole you, not only your colon. Simply say, "I'm nervous" and most nurses (and other staff?) will turn somersaults to help allay your anxiety. Other tips: every time you visit the "loo" (as you Brits say), frame it as "Oh, the med is working, they will be able to see so much more!" If you fear sedation- I HIGHLY recommend "conscious sedation" where you aren't knocked out, but are completely out of it; you can stay fully awake, but it's uncomfortable, esp if you're scared. Tell these nurses you're scared too. Most will joke with you, distract you ("what was your favorite vacation?"), or hold your hand. And I say a prayer. ...Then, what feels like seconds later, you wake up, albeit very loopy! ...Awaiting results can be super stressful, and sometimes results are now what we hoped- but again, try to see all of this as part of a potentially life-saving process. And be glad?! GOOD LUCK.