Lesh - a subchorionic bleed is a bleed at the implantation site of the placenta. It can cause an increase in miscarriage and it can cause some bleeding through your pregnancy. However, it depends on the size and in most cases it is not a problem - the pregnancy progresses normally and the placenta grows normally too. In fact, some OB's think there have been many of these previously but it is only now we are aware of them due to early scanning.

I had a subchorionic haematoma (same thing) this pregnancy and had a small amount of bleeding at weeks 10, 11 and 12. I was told it can occur as the growing placenta pushes the trapped blood clot out. My baby is continuing to grow well and in roughly 6 weeks we should have a baby to take home.

I wish you luck and all is well.