I had the exact same thing last year. Turned out to be a slight bleed from haemorrhoids. The colonoscopy wasn’t nearly as bad as I’d anticipated - the bowel clearing solution taken the day before was the hardest part. But if sedation is offered, take it. Not only does it make the whole experience easier, but it makes for a better result because it relaxes the bowel. My SIL was told a couple of years ago that the testing kit are so sensitive that if you swallow even the tiniest amount of blood before doing the test, from say a cut lip or gum, or you suck blood off a pinpricked finger, for example, it can show up as a positive result. But that doesn’t mean you shouldn’t have it checked out - treatment options and outcomes are much better the earlier anything suspicious is sorted. Fingers crossed for you, I’m sure you’ll be fine.
Are you in your forever house?
Retiring and living frugally in money from downsizing after years of stress

. I'm afraid I did show myself up I was having a tube down my throat at the same time. As I came around from the Colonoscopy I could hear the nurses giggling and the DR . had a big smile on his face. It seems whilst under the influence I had said to the Dr I hope you did my throat first.