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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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Illustration of a skincare routine tailored to different phases of the menstrual cycle.
Do you notice more skin breakouts a few days before your period kicks in? Or perhaps your skin is duller and drier on the first few days of your cycle? That’s because your menstrual cycle impacts your skin’s health and appearance. In this article, you’ll learn how different stages of the menstrual cycle affect your skin and tips to adapt your skincare based on your cycle phases.
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A regular period is a sign of overall good health. If it doesn’t arrive when it should, we worry. Most women experience some variability in their menstrual cycles. How familiar are you with yours?
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A woman's diet directly affects her hormones and menstrual cycle. Paying attention to what you eat can produce a more regular, less painful period, and a healthier state of mind.