I was 7 weeks when I had my dating scan done, they saw what the sonographer took as a hematoma (bleed/clot) right beside the amniotic sac, it was a bit difficult for them to find the baby in the actual sac in the first place and I read online about that happening and was just wondering if it's possible what came up was actually not a bleed but a second sac and the other baby could be hiding somehow?