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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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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.
Harmony in Flux: Navigating the Challenges of Irregular Periods.
The average menstrual cycle lasts 28 days. Our lives impact our hormones, and therefore our cycles—for example, stress can delay your period. Some variation is to be expected, but bigger fluctuations are reason to investigate.
Cycle of Wellness: Navigating the Phases of the Monthly Cycle.
Your monthly cycle is more than having your period every month. There are changes in your body that manifest both visibly and invisibly, affecting you more than you may realise.