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Period / Ovulation Calculator
Track your menstrual cycle and predict ovulation
Typical cycle length is 28 days (range: 21-35 days)
How long your period typically lasts (3-7 days)
Important Notes:
- Ovulation typically occurs 14 days before your next period
- Fertile window includes 5 days before ovulation and 1 day after
- Cycle length can vary month to month - track for better accuracy
- This is an estimate. For precise tracking, use ovulation predictor kits or track basal body temperature
- If cycles are irregular, consult with a healthcare provider