So glad you had normal session this morning @"Kiwi Angel" .....
Just a thought - do you regularly take aspirin or similar (as a blood thinner or prevent strokes/heart attack?) My brother was taking them for decades & had a stomach bleed .... it also can show as either extremely dark poo (cos it has blood in it!)
Yep - I had a haemorrhoid once & rubbed it 'overly hard' with the toilet paper, popping it & making it bleed (hurt like hell for a second too!) It never came back tho!
Fingers crossed that is it!!