My mum had a friend who was brought up on a farm, ans she led quite a sheltered life.She believed that if you "courted" a boy for 9 months you would automatically become pregant. Subsequently she finished with all her boyfriends after 8 and a half months...she still single now at the age of 66!
A childhood belief about getting pregnant

others believed things like this
- My sister used to think that because I was 15 months older than her, I would die 15 months before her!— Nicola Braden
- Until about 6 months ago (I'm 21), I believed a bidet was used to wash your feet in.
Eep!— Rebekah - I used to think once you got pregnant, you couldn't have sex at all during the 9 months.Anon
- I used to believe babies were 9 months old when they were bornAnon
- I used to believe that after 9 months, mothers went to the hospital to buy a baby off the doctors.Anon
- I always thought that after 1999 it would be 1990 again, but with different months and days of the week
— optional