No poop!

Baby girl pooped at the hospital and then like 4 times in one day when we brought her home.  Last poop was darkish green/somewhat brown and that was last Tuesday at around 5am.  It's officially over a week later and no poo.  She's breastfeeding and peeing very regularly and farts a bunch too but no poop.  I texted her pediatrician and he wants to see her first thing tomorrow morning.  Anyone else experience this?