Mucus in poop?

Leanna

My baby is 6 weeks and ebf. I've been noticing his poop has been a little mucusy lately and was wondering if it could be an allergy or something? It's not super mucusy but theres definitely some there. Hes not any fussier than usual, not losing weight, he does spit up but I have a fast let down and hes always done it. Could it be dairy intolerance or is it normal? I added a picture of his poop.

I'm a Ftm! Thanks!