Vomiting: An examination by a physician is advisable. After 3 days of vomiting,a diagnosis is needed and dehydration is a concern. Ongoing headache would be very worrisome. Possibilities include viral gastrointestinal infection, gastritis, migraine(if headache persists),severe indigestion, medication intolerance(if you were taking any). I assume pregnancy is not an issue.
Answered 11/18/2019
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