Help a mama out! She is formula fed, her poops are always dark green due to the added iron in the formula. She is on gerber good start soothe, and was having solid/clay like poops so her dr suggested doing an ounce if prune juice in her bottle once a day. This has helped make her poop mushy and easy to pass. But now WTF is this???!?! It’s GREY. And yellow & seedy? She has NEVER had either colored poops. Has anyone experienced this too? Whats going on?!