My 2 week old is breastfed and last two poos been vinegary smelling. Also v runny and explosive but seem to remember that's normal at this point? Bright yellow and seedy so no worries there.
I do have fast let down plus he has cold (thanks big brother) so he's struggling a bit and v windy but the vinegar thing seems odd.
Any thoughts or just one of those things? Generally has fussy, crying, cluster, windy time for three hours anytime from now till 5am (lovely)!