I'm a 14 year old girl and I'm pretty short. Like 4"7 short. I haven't started my period yet and I'm kind of worried. Both my sisters started 3 months before turning 14 and I still haven't. I have a different Dad then them though. Everything else of puberty has hit me but my period. (Like pit hair,pubes,boobs growing etc). I was wondering if this is normal? I'm really worried about it.