Hello. I can't give advice as not medical but have recently had a colonoscopy. It's not pleasant but actually you feel better for it afterwards. You have the drink which clears you out completely and I had no bad experience with that.  I was able to see the screen at all stages and they did remove a polyp. They put a blue dye in to identify it and was told it looks like a Smurf! 8 biopsies taken... would never have known. I really hope all comes back normal and remember , you are there to treat anything early if there if anything. I really hope all goes ok x