Dark stool in 2 year old.

Kathleen

My 2 year old has had runny poop for maybe a week now. No other symptoms. So I guessed it was her diet so we changed her diet and it never changed her poop. And it’s runny and I wouldn’t say black but very dark and she poops like this maybe 4-5 times a day. Any ideas? Plan on calling the dr tomorrow and talk to a nurse.