Newborn poops

My daughter is 4 days old today...she had a very big poop diaper yesterday morning after drink formula all day an night,but today hasnt pooped but i have been breastfeed her all day an night an shes only drank formula 3 times all day..she does pee a lot though ,just not pooping daily...is it normal? Calling dr tomorrow...just want to know if any one else has been threw this