Menstrual periods are part of a monthly cycle your daughter will experience that enables her to reproduce. On average, girls experience their first menstrual period between the ages of 12 and 13, but every girl’s body changes at a different rate. Some girls start menstruating as early as age 10, others not until 15. Most girls start their menstrual periods before age 16.
Menstrual cycles last an average of 28 days, but may range anywhere from 21 to 37 days. Periods can last from two days to a week. There are many normal variations in the cycle.
You should make an appointment with your daughter’s doctor if:
Girls and young women typically experience physical and emotional symptoms right before – or during – their periods. These symptoms – caused by changes in a girls’ hormone levels – are normal.
It’s important for your daughter to see her doctor if she is experiencing significant menstrual irregularities, heavy bleeding, or very painful periods known as dysmenorrhea.