Baby not pooping?

My little one turned 5 weeks yesterday and is EBF - she hasn’t pooped since Wednesday and before that her last was Sunday. So she had a 3 day gap last time, this time it’s been 4-5 days.

She doesn’t seem to be struggling in any way, plenty of wet diapers, her appetite is fine she’s just starting to seem a little fussy? I know breastfed babies can go a while but how long is too long?