Add Yahoo as a preferred source to see more of our stories on Google. (Emily Scherer for The 19th) Cara Stanton didn’t get her period until she was 22. For years, doctors — including her pediatrician ...

Birth control effectiveness varies by method, with implants, IUDs, and sterilization preventing pregnancy over 99% of the time. Pills, patches, and condoms are also reliable but depend more on correct ...