How often should 1 month old poop?

Margarita

I’m exclusively breastfeeding my baby every 1.5-3 hours. She’s 1 month & 3 days today & I’ve noticed she’s pooping less & less frequently. She went from 5 poops, to 4, to 3, & so on a day, but the day before yesterday she pooped onced & it was a lot! Like if she was to be holding it or something...and yesterday she didn’t poop at all :( I’m worried she’s constipated or maybe she’s not getting enough breastmilk? She never seems to be in any pain. She’s only fussy from time to time when she’s tired and sleepy. She passes gas frequently & I change her wet diapers every 2-4 hours. Is this normal? Should I call her dr? Her next dr appt isn’t until the 17th.