OK,I had sex with my boyfriend on the 15th and 27th of August my period was due on the 29th.Its now the 10th of october and i havent seen my period. yes i have taken home pregnancy test twice several days apart and they came back negative,so i'm confused and frustrated!There is this odd feeling on the left of my womb as well as i'm constantly feeling as though my period is about to come except it does'nt . Can some kindly please advice me. Thanks