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WOW.

I am overwhelmed by the number of responses and the care and concern
some of you expressed.

And to summarize, without a doubt vomiting is a symptom of gluten
ingestion, with or without other symptoms.

Thank you ALL for your helpful and caring emails.

[and to reassure some of you that we are all "OK" here: my oldest
daughter is the diagnosed celiac, and her youngest sister, who favors
her remarkably, rarely gets gluten, but it appears that when she does
(either eating it herself, or through my breastmilk), she is now
reacting to it, by vomiting]

Jennifer G