Is this something to be alarmed with? She was born on the 16th of September and is almost 3 weeks old. Her poop has always been a yellowy color and just a bit ago, I changed the diaper and it was now green? I have been having stomach issues lately, so I was wondering if she caught something from me or is it normal? I have been having a lot of diarrhea over the past couple weeks...she has not, just green poop this changing and gas...so I was wondering.