My 3 week old has been having a liquid dark green poop her eyes do get watery whenever she needs to poop. Doesn’t seem gassy at all but every feeding (halfway through the feeding) never fails she needs to poop and it’s so watery like and all these rumbling noises in her tummy. What could it be? Allergic to the formula? We’re doing the Similac Total Comfort switched from Similac Advanced and Similac Pro Advanced. I’m waiting on a call back from her Pedi at the moment but also wanted to get some info/advice. Thanks mommas