Breastfeeding/ pumping mommies: baby poop, help!!

I am pumping and bottle feeding my baby and the past 2 days she has had a teeny bit of light pink mucus-y blood in her poop. And it has been either the yellow seedy or a dark green slimy poop. Anyone else experienced this? I called her dr twice yesterday and both times they're "waiting on the dr to call back" so I guess it's not something bad. Just didn't know if you had experienced the same. Poor girl strains and grunts all the time to poop/ pee. So I thought maybe the blood was from straining so much but the dark green poop concerns me.