my advice to you would be please dont do this alone, try and tell somebody you trust. Sure your parents are not going to be over the moon with you but i'm sure once the initial shock wears off they will just want the best for you and your unborn baby. Now is the time you need people around you, its a scary time for any pregnant lady, let alone a 14 year old. My daughter is 11 and I hope to god, if this ever happened to her she would trust me enought to tell me.
Good Luck honey