Hi I usaly use to have hve normal periods,i had my last period on 28 sept as normal for 5 days. Me n my bf had no sex aftrward.. On 23 we had unprotecd sex ,will my bf used pullout method & nw i was suppose to have my periods from 24 oct.... Bt nw 4 days passed thers no sign of my periods ..... Pls help me m worried ..ASAP