Menstrual Cycle Hub
Demystifying the hormonal rhythm that guides your body month after month. Understand the biology of menstruation, the follicular phase, ovulation, and the luteal phase.
Recommended Calculators & Tools
Evidence-Based Guides & Research Articles
Period Tracking6 min
What is a normal menstrual cycle length? Learn how to calculate your cycle, what affects it, and when cycle length changes are a sign to see a doctor.
Menstrual Health9 min
Learn how estrogen, progesterone, LH, and FSH drive your menstrual cycle. Understand what happens to your hormones in each phase and how imbalances cause symptoms.
Menstrual Health7 min
A missed period can have many causes beyond pregnancy. Learn about the 12 most common reasons for a late or missed period, from stress to thyroid issues to PCOS.
Menstrual Health8 min
Discover proven period pain relief methods — from home remedies like heat therapy and essential oils to medical treatments for severe dysmenorrhea.
Menstrual Health8 min
Learn what causes irregular periods, how to identify if your cycle is truly irregular, which conditions may be responsible, and when to see a doctor.
Menstrual Health9 min
A comprehensive guide to PMS — premenstrual syndrome. Learn the symptoms, causes, proven relief strategies, and when PMS becomes PMDD.
Menstrual Health9 min
Everything you need to know about the normal menstrual cycle. Understand the four phases, typical cycle length, hormonal changes, and signs your cycle is healthy.
Period Tracking8 min
Learn how to track your period effectively using a period tracker app. This complete guide covers what to log, how to read your data, and why cycle tracking matters for your health.
Common Questions About Menstrual Cycle
Track Your Cycle Confidentially
Use PeriodTracker to secure your logs and predict upcoming cycles. Completely free.
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