How puzzling... all I know is, the characteristics of poop and their color/consistency/smell can mean something.
Usually, they say that if poop is white or clay colored... this is not normal...and can signal problems with bile or liver or a blockage of some kind. If it is "oily" or "greasy", smelly and green colored... this can mean something else.
Or it can mean maybe she is allergic to something, or the round of antibiotics she's had. But none the less... usually white or clay colored poop is not good.
Myself, I have not seen or known anyone whose child had such a varied color of poop... I don't know if this is considered "normal" or not? Especially since this has only been happening since July... it does not seem to be her "usual" BM characteristics. Perhaps check on this with Doctor....
have they tested her poop? Asked for any samples?
Can they do an MRI or CAT scan on her???
Perhaps get referred to a Specialist... plus with the appearance of lumps, any Mom would be worried.
How is her general development? Normal? Delayed? How is her growth and weight gain? How is her behavior? How is her appetite and intake? All these things, I would think, should be taken into consideration in light of all the other symptoms she seems to be having.
All the best... and big hugs to you. I understand this is a big worry for you... I wish I had a magic answer for you. Just KEEP ON checking with the Doctor... research things... and get a Specialist ASAP.
take care,
Susan