Little girl is 11 weeks old, for a few weeks now her poop has smelled like vinegar? Has anyone else experienced similar? X
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Idk about vinegar- sometimes my LO smells like sulfur or rotten eggs

We definitely had vinegar poo and mucousy poo....learned baby had dairy intolerance (later even a full.blown allergy)

Second what Amy said - I’ve read that vinegary poo could be a sign of an allergy.
thank you guys! I’ve been looong at intolerance and dairy symptoms - she’s had none until the last couple weeks. Can it form by week 11? Is it not something they’re born with? Xxxx

Wondering this too
we are now looking into silent reflux and CMPA with the GP if that’s any help xxx

Yep, totally possible. We didn't know he had dairy intolerance until 7 months with him. He was our first, and later learned we could've seen mucous signs in his poo if we knew what to look for, ....we just assumed messy soft baby poo from before he started solids. But once the vinegar smell started, shortly after we had little bit of blood in his diaper. Our pediatrician first tested and confirmed blood in stool, then said dairy intolerance. Later we tested for the allergy - and he has CMPA.
They told us a lot of time it is discovered or identified in the first couple months, but not always. Our case was definitely in the "not always" category..