A 22-year-old female asked:
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is nausea before a period normal? i have no appetite and can become very nauseous a week or a few days before my period, but not always. why is this?

1 doctor answer
Dr. Cynthia Frazier
39 years experience Gynecology
Nausea: Is a symptom of PMS. It is caused by the hormone progesterone which peaks after ovulation. Its this same hormone that causes morning sickness during pregnancy when the levels are much higher. Occasionally you may not ovulate or you may not produce as much hormone so you might not have nausea every cycle.
Answered on Jul 12, 2015
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