Green seedy poo (consistently for days)

Hey, some help needed... has anyone else experienced this? (See photo). The green pesto type poo has been for days now. I EP breast milk and give it to my 7 week old in a bottle. We had the mustard poos until 3 days ago when they started looking like this. I also top her up with formula as my supply isn't fantastic at times. I have been reading about foremilk/hindmilk so recently started pumping for 2 mins and throwing away what looks like foremilk but the poos are still looking like this. I'm starting to worry as she doesn't feed well at the best of times. These poos are frequent and explosive. The HV is coming tomorrow so I will talk to her but I'm getting increasingly worried and upset. Our breast feeding journey has been difficult from day 1. If my milk is making her unwell and that's why her nappies are like this, then I will stop. I don't feel ready to but ultimately I want her well, healthy and happy. If anyone has or is experiencing this please let me know. Any advice/info needed. TIA, worried momma x