A way to conceive..So I was told.. Anyone done this?

Kara
I found out my cousin was pregnant after I've tried for almost a year. I called to say congrats, see how she felt after finding out(she was 17 still in HS). She said she got pregnant on purpose; did so by putting a tampon in her after her & her boyfriend had finished so nothing would come out. I never heard of anyone doing this, let alone it working.. I'm curious if anyone else has heard of someone getting pregnant this way.