Reproductive System: Hormones, Periods & Pregnancy Health

The reproductive system is regulated by complex hormones. Understand menstrual cycle counting, the impact of lifestyle on sperm, and premenopausal symptoms.

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How to Count Menstrual Cycle Days

Tracking your menstrual cycle can be important for a number of reasons. These include determining your normal pattern, which can help you identify changes that could signal a problem.

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