Ay, normal lang yan sa exclusively breastfed babies, a few of us nakaranas nito, kaya don't panic! Breastmilk is super digestible kaya sometimes they can go 4-7 days without pooping, especially around this age, and it's still okay as long as baby is acting normal, gaining weight, and may wet diapers. But check with your pedia just to be sure, lalo na if baby seems uncomfortable, bloated, or hindi kumakain ng maayos, better safe than sorry, di ba?