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Ovulation and Fertility calculator

Use WomanLog's Ovulation Calculator to figure out your most fertile days and a date when you may be ovulating. This calculator helps you work out when you could get pregnant.

First day of your last menstrual period
Your average cycle length
Your average cycle length
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Woman experiencing emotional symptoms of Premenstrual Dysphoric Disorder (PMDD) during menstrual cycle.
As hormone levels begin to drop after ovulation, most women experience some changes in their physical and mental state such as tender breasts, bloating, or moodiness. Such symptoms are often linked with Premenstrual Syndrome, or PMS. For those of us who suffer from Premenstrual Dysphoric Disorder, or PDD, the symptoms—especially those having to do with emotions—are noticeably more severe.
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.
WomanLog app – safe and private period tracker, does not share or sell user data
At WomanLog, your personal information is always private and secure. We never share or sell your data to third parties. Your privacy is our priority. You can also read an independent study that confirms this.