So... pregnancy prevention was possible all along... who knew...
Not really. Until recent times, doctors were incredibly reluctant to do this on young women. I started trying to get one in my early 20s and no doctor would do it. "Oh, you'll change your mind, you'll meet the right man and you'll want his bay-beeeez..." No. No, I carry hemophilia, and I have no maternal instincts. But would they listen? No. I couldn't find one till I was almost 35, and I paid a pretty penny out of pocket for it, too.
A lot of men don't seem to know. That's why we have nonsense terms like "forced fatherhood".