30 Day Cycle Overview
Ovulation: Day 16
High Fertility: Day 11 – 17 | Next Period: Day 31
Phase Breakdown & Health
A 30-day cycle is composed of two main halves. The first is your Follicular Phase (lasting roughly 16 days). The second is your Luteal Phase, which is structurally fixed at around 14 days. If you recently stopped hormonal birth control, expect it to take 3-6 months for your natural 30-day rhythm to fully stabilize.
Your Specific Cycle Metrics
| Cycle Day | Biological Event |
|---|---|
| Day 1 | First day of period (Full Flow) |
| Day 11 - 17 | High Fertility Window |
| Day 16 | Estimated Ovulation |
| Day 31 | Next expected period / Testing Day |