What Is An Average Age To Get Your Period. However its normal to start your period a little earlier or later too. In the mid-19 th Century the average age of menarche in the US. So the chart below gives the events and their ranges. For most girls their first menstrual period or menarche say.
Girls have started getting their first period earlier than in the past so now its considered normal for girls to get their period between 9 and 14 years old says Maureen Whelihan MD an. Menstrual flow might occur every 21 to 35 days and last two to seven days. Most girls start to menstruate between ages 10 and 15 years. And its not just an American trend. But getting it any time between age 10 and 15 is OK. Although theres no one right age for a girl to get.
Although theres no one right age for a girl to get her period there are some clues that menstruation will start soon.
See a GP if your periods havent started by age 16 or 14 if there are no other signs of puberty either. The average age for periods in the US. In 1928 Howard Kelly a gynecology professor at John Hopkins University claimed that the average age to get your period for American girls was 139. First period will come about 4 months before or after these events. Thats usually between the ages of 10 and 16. Was around 17 years old though given that slavery wasnt outlawed until 1865 that data was not likely entirely representative.