Green poop?

[sixtwelve09]

For the past two days my baby has wanted to eat non-stop...she stays on me constantly and the minute i take her off to try and get something done like go to the bathroom or shower, she screams. She sucks on her fists and just acts like she's starving to death. Also, her poop has been green which I read was an indication that she isn't getting enough of the high fat milk just the watery stuff. I dont understand how thats possible when she stays latched on all day long. She's gained 1pound and 7oz since her birth and our latch hasn't changed so Im not sure if that could be the problem. Has anyone else dealt with this? Im not ready to supplement her yet but im really clueless what my next step should be.