Bf baby poop question need advice!

Sonya • 🤍💜 Mom of 4 girls 🤍💜

Hi I have a question I hope you'll be able to help me with I've been bf my daughter for 4 month and she's always had loose yellow poops and I was told that was normal but now for the past week they have been green and is sometimes mucousy what could be going on? Thank you