I have a 2 day old who is breastfed and she hasn't pooped since early this morning... I'm a first time mom so I'm nervous about everything

My doctor told me they can poop almost every feeding, especially if they're eating formula. My daughter typically only poops once a day & she is formula fed, but sometimes she'll poop three. The "golden rule" I was told is as long as there's no black, white, or bloody poop, you're good 😊 and I don't think they're supposed to go more than 4(?) days or so without pooping. I think they can go up to a week without pooping if they're exclusively breast fed.