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No. Ovulation typically alternates between the two ovaries each month. However, this process is not strictly predictable, and some variations can occur.
If a woman has only one ovary—whether due to a congenital condition or surgery—ovulation will always occur from that same ovary. In such cases, the body adapts naturally to preserve the available follicles, meaning that women with a single ovary usually experience little to no impact on their fertility or the age at which menopause occurs.
General information, not a diagnosis: talk to your doctor about your own situation.
Professor of Reproductive Medicine, Obstetrics and Gynecology
Antoine Béclère and Jean Verdier University Hospitals
Yes. In some cycles, a woman may release two eggs instead of one, meaning that two follicles reach maturity and ovulate.
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Each month, a mature egg is released. Fertilization happens when it meets a sperm cell: the two fuse, and their chromosomes combine into a zygote.
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The ovaries make female hormones, mainly estrogen, and release an egg each month from puberty to menopause. Estrogen also supports bones and the heart.
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