27 Day Cycle Overview
Ovulation: Day 13
High Fertility: Day 8 – 14 | Next Period: Day 28
Is It Late, or Just Delayed?
If your cycle is normally strictly 27 days, a variation of 1-3 days is still medically considered normal due to stress, travel, or minor illnesses affecting the exact release of your egg (delayed ovulation). It is officially considered "late" once you pass Day 32 without a period.
Your Specific Cycle Metrics
| Cycle Day | Biological Event |
|---|---|
| Day 1 | First day of period (Full Flow) |
| Day 8 - 14 | High Fertility Window |
| Day 13 | Estimated Ovulation |
| Day 28 | Next expected period / Testing Day |