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Period calculator

Use WomanLog's Period calculator to predict the next period days and to understand your menstrual cycle.

First day of your last menstrual period
How long did it last (days)?
Your average cycle length (days)
How long did it last (days)?
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Your average cycle length (days)
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Visualizing Influence: The Impact of Hormones During the Menstrual Cycle.
Reproductive-age women experience a menstrual cycle roughly every month. This cyclical process is connected to all the other systems that keep our bodies running and support our capacity for reproduction. The menstrual cycle is sensitive to the other changes that occur in our lives—environmental, emotional, or other.
Unlocking Insights: Visual Guide to 5 Reasons to Track Your Cycle with WomanLog
Mobile period trackers have revolutionized access to data-driven knowledge about the female reproductive cycle. Not long ago, all we had was a calendar, a pen, and our own questions. Now, period trackers make it possible to record the daily progress of your menstrual cycle and the symptoms you experience, pinpoint ovulation, predict when your next period will start, help you get pregnant or avoid pregnancy, and much more—all in one simple app on your phone.
Empowering Wellness for Menstruation and Exercise.
Pain, fatigue, headaches, stomach upset… Many women find their bodies are more sensitive and prone to fatigue when they are menstruating as blood flow is often accompanied by many unpleasant side effects. So, should we reduce or stop engaging in physical activities during menstruation? The answer is no. Still, there are some nuances worth considering.