Know your body
Women's Health
Soft, honest, evidence-based info on what's happening, plus space to track and reflect.
A gentle reminder: This is educational information shared with love, not medical advice. Always talk with your trusted healthcare provider about what's right for your body.
What's 'irregular'?
A typical cycle is 21–35 days. Irregular means cycles shorter than 21 or longer than 35 days, or varying by more than 7–9 days month to month.
Common causes
- PCOS (polycystic ovary syndrome)
- Thyroid disorders (hypo- or hyperthyroidism)
- Stress, over-exercise, low body fat
- Perimenopause
- Hormonal birth control changes
- Hyperprolactinemia
- Uterine fibroids or polyps
- Endometriosis
When to see a doctor
- 3+ missed periods (and not pregnant)
- Cycles consistently shorter than 21 days
- Bleeding between periods
- Severe pain or very heavy flow
- Sudden change after years of regular cycles