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How does ovulation affect menstruation?

Ovulation usually takes place about halfway through a normal 28-day menstrual cycle. After ovulation, the body produces high levels of the hormones progesterone and estrogen. The hormones thicken the lining of the uterus in anticipation of a fertilized egg. If no fertilization occurs after ovulation, after about 14 days the lining of the uterus is shed to begin menstruation. If no ovulation occurs at all, the menstrual hormones become imbalanced. Menstruation can become irregular or even stop.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.