You Have Regular Cycles… But You Might Not Be Ovulating!

Many women assume that regular periods automatically mean normal ovulation. However, this isn’t always true. So-called “anovulatory” cycles can occur even when menstruation seems perfectly regular.

What is an anovulatory cycle?

An anovulatory cycle is a menstrual cycle during which the ovary does not release an egg. Without ovulation, conception is impossible, and certain hormones such as progesterone remain low. This can go unnoticed because your periods may continue, although they might be slightly lighter or deceptively regular.

Common causes

• Mild Polycystic Ovary Syndrome (PCOS): Even mild forms can disrupt ovulation while keeping cycles regular.

• Hyperprolactinemia: High prolactin levels can block ovulation without noticeably affecting the appearance of periods.

• Stress, significant weight change, thyroid disorders: These factors interfere with the hormonal signal needed for ovulation.

Warning signs

• “Regular” cycles but no ovulation symptoms (no ovulation pain, no cervical mucus changes).

• Difficulty conceiving after several months of trying.

• Blood tests showing hormonal abnormalities: prolactin, AMH, LH, FSH.

Why it’s surprising

Most women—and even some healthcare providers—assume that regular periods confirm ovulation. In reality, about 15–20% of women with seemingly regular cycles may not ovulate properly. This means a “perfect calendar cycle” can mask an underlying hormonal issue.

What to do

• Consult a gynecologist or endocrinologist for a full hormonal evaluation.

• In mild PCOS, ovulation can often be stimulated with simple treatments.

• Personalized follow-up to identify the cause: hyperprolactinemia, thyroid disorders, or others.

Conclusion: Don’t rely solely on period regularity. Even a cycle that seems perfect may hide anovulation. Early detection helps optimize fertility and hormonal health.

Take good care of yourself.

Dr. Sandra Yene Amougui