Subchorionic hemorrhage/bleed

Has anyone ever had a subchorionic hematoma/hemorrhage/bleed that caused them a problem with pregnancy? I have had once since 5 weeks. It was also seen, and larger, at my 8 weeks. I don't go for my 12 week until Wednesday 10/8, but I did a quick scan on myself yesterday (I'm a nurse) and can still see the bleed. I know many women have these and they typically dissolve. I'm not having any bleeding. Has anyone had them cause a problem or cause miscarriage? I'm 11w4d today.