How often does your baby poop now?
As long as you are EBFing skipping a day or two or three is nothing to worry about.
You could try probiotic drops if you are concerned. Also, i have found ECing helps them poop as the hold position puts them in much like a squat position and makes it easier to push than if they are laying down or in a baby swing or seat.
"Dirty diapers: Expect 3-4+ stools daily that are the size of a US quarter (2.5 cm) or larger. Some babies stool every time they nurse, or even more often–this is normal, too. The normal stool of a breastfed baby is yellow and loose (soft to runny) and may be seedy or curdy. After 4 – 6 weeks, some babies stool less frequently, with stools as infrequent as one every 7-10 days. As long as baby is gaining well, this is normal."
Arwen has been an infrequent pooper from the beginning. Even in in her first weeks she only pooped every 3-5 days. Now she goes every 7-10 days. We are on day 10 today, and I am strongly considering doing a baby suppository if she doesn't go today as she is getting fussy and restless. She was on probiotics for her first 2 months and it didn't seem to make any difference.