on dt 13/10/08 i ejaculated in my girl friend vagina.n after 4 hrs she had taken a dose of ipill'n still she is feeling her stomach heavy, as i heard after having ipill female start their periods within 3 to 5 day,n also her natural period dt is 19th. so as still she doesnt get her ipill period is their anything to worry about, or whether she need to consult any doctor, plz help me in this.