Experience with a subchorionic hemorrhage?

I miscarried twice ( 5 w and 9 w) and this is my third trial. I was really optimistic about it (You know.. 3 is a magic number) until I saw dark brown bleeding that became more fresh/ bright red. Doc office ordered another hcg and the level came back ok!! They said it might be a subchorionic hemorrhage and scheduled an u/s in 10 days. But bleeding won't stop. I'm really worried I might be miscarrying again but they just didn't detect it cuz it was too early for hcg to go down! Any similar experience? Thanks!