... or beetroot!!! I ate quite a lot of beetroot on Sunday and more on Monday. Starting on Tues I was getting odd-coloured poo, that got a lot odder y'day and is still not improving today. Sorry for TMI but it's darker than usual overall (though not black) and is very patchy with purplish-red, quite bright patches. And when I wipe, I'm getting a very faint tinge of purply-maroon on the loo paper. 
I have had a reaction to beetroot before, but I don't remember it lasting as long as this. DH ate the beetroot too but he only had funny poo the day after. Mine started 2 days after and isn't gone yet.
How long do I leave it before I stop assuming it's beetroot related and hurtle to my GP surgery?
I should add that I'm doubly paranoid because I've been battling chronic constipation for the last 6 months. However my GP did stool sample and blood tests 4 months ago and I got a clean bill of health back then.
Can beetroot poo REALLY last this long? And look this scary?
Thanks and again, sorry if TMI!!