I used to believe that when a woman discovered she was pregnant, she would ask the father if he wanted to keep it and if he said yes, they would have sex. If they didn't want to keep it, they would do nothing and she wouldn't be pregnant anymore. This was from watching TV soaps.
A childhood belief about getting pregnant

others believed things like this
- I use to believe that the man peed in the woman to get her pregnant. Didn't know about sperm until sex ed. — das
- When I was little I used to think that as soon as you were married the woman automatically got pregnant.Anon
- Whwn I was like 8 I used to believe woman just got pregnant randomly. Anon
- I knew someone who thought condoms were so that the MEN wouldn't get pregnant!Anon
- I used to believe that when a woman was pregnant the baby could play monkey bars on her ribs.— Laura
- I used to believe that when a woman was pregnant, she fed the baby with a tiny spoon through her belly button.— Marie