I used to think you could only get pregnant if you had sex while on your period.
A childhood belief about getting pregnant

others believed things like this
- I used to believe that you had to be on your period to get pregnant........— Tricia
- I used to believe that if you went swimming after you got your first period, then you could get pregnant. — Mel
- i used to believe that only humans got pregnant by having sex. sheep just magically became pregnant.— Lucy
- HA! I used to think when you got your period, you would just pee blood...I wish it was like that...if only.Anon
- i used to think that had to wear diapers when you were on your period— Jess
- I used to beleive that a period was when your boobs grew— sarah