A 39-year-old member asked:
does anyone know why a menstrual cycle changes in a young girl?
2 doctor answers
Dr. David Finke answered
14 years experience Obstetrics and Gynecology
Very common: Menstrual cycles are typically unpredictable in adolescence. Just be patient or talk with your pediatrician or gynecologist if worrisome.
Answered on May 1, 2018
Dr. James Ferguson answered
45 years experience Pediatrics
Pacing: In the first months after they start, teens often don't ovulate (release eggs) which is part of the hormonal system that paces regularity. Without ovulation the cycles are driven by estrogen levels and may be erratic. After 6 mo to a year, most are ovulating & set a pattern. However, some go on to remain somewhat irregular through life.
Answered on Jul 11, 2019
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