When I was younger I thought you had your period one month and didn't have another until the next year the same month.I also believed that when you were on your period you wore a diaper.
A childhood belief about periods

others believed things like this
- My mom told my sister that if she didn't eat her peas, her period would last for an entire month.— Maya
- For years I thought that spunk was a male period and that boys spunked once a month - Yeah right!— Stupid Child
- My sister believed that october was the 10th month!— Sally
- My parents have the same birthday -- month, day, and year. I though all mom's and dad's had the same birthday.— Cait
- I convinced my sister that chocolate milk was made out of Keebler cookie elves, she believed me for a month— Rainbow Steel
- In 6th grade, I thought that once you got your period, you'd have it forever!!!! 24/7Anon