I know this is an old thread (hopefully everything is going okay) but I was 13 when I met my fiance, and I'm still with him ten years later. While I do believe that fourteen is a bit young, we have no idea the background and whatnot.
Anyway, best thing is to buy a pregnancy test if you think you're pregnant. Stress and everything can apparently make your period late. I don't have them anymore so I'm kinda odd when it comes to giving advice.
Most important of all is remember the consequences of sex. If you can't handle them, then look into other things to do.
It's A Girl Thing! ♥
A Family, A Home.