Here in Ohio there are free clinics that help these young girls. One is not more then 7 miles from me in a very upscale part of town. You can get an exam and free pills. And you can always go to the drug store and buy condoms. It might be a bit ackward for a teen girl but it's a lot less so then giving birth. And as a mom of two boys I always advised them to be careful and be smart. None of my kids found themselves in trouble as they used to say. I am not saying it was easy, but it's a lot more so then an unwanted pregency.
If there are still parents who think their teenagers are not having sex, well I have yet to meet one. It might not be what parents want or how they taught their child but it's what is.