Oh! I didn't know *anything* about ovulation or irregular periods before, aside from "your body releases an egg once a month, you get your period once a month." I didn't know it was only a small window the egg actually is there and can be fertilised! That information would've saved me a great deal of worry that one time in high school when the condom broke and I thought I might get pregnant I shudder to think how much I didn't know, even though the girls in my year level did *extra* sex ed classes at one point...