I know a lady whom bled throught her entire surprise pregnancy. They had decided to not have kids, but she became very ill & found out 5 months later that she was almost 15 wks preg!!! but then she began bleeding & so weekly had scan, internal, external etc, including 3D! They were told it was a boy at everyscan, with all different sonographer/scanologists, at hospital, at US places & her Ob's rooms.... then she began at 38wks (I was gonna try to spell haemoraging) but instead will use bleeding profusely, so they did an emergency C/S... Out came a... GIRL!!!!!!
Her DP was so gobsmacked & said had he not been present for the C/S he would have asked where his baby really was coz it was a boy!!!
They have had 3 more babies since (so much for not wanting kids!) they have not asked gender ever again!!!

We asked with Indah & were told a guess would be 60% girl... She was a girl, but next one I am definately not even asking!!!!