I am sure that now, having been due in July, you have delivered your healthy child. I was researching this topic after many, many attempts on the internet. You are lucky that you did not find very much there. I searched and found ample scarey reports of loss with a few positive reports. The reason I am writing you is because I have a subchorionic bleed, and while I am sure that not all of them are caused by the same thing, I think you should talk with your doctor about blood clotting factors. Subchorionic bleeds have been noted to commonly correlate with Protein S deficiency.
I seen a perinatologist after having an ectopic pregnancy followed by a 37w delivery of a son that lived for only 30 days. He had strokes while I was carrying him. They could not figure out what caused his problems. When I found out that I was pregnant again just two weeks later, I saw a perinatologist who did a bleeding time test and a clotting factor test on me. I was found to have Protein S. While it is currently not standard to have clotting tests ran for all women, it should be. I was on birth control which could have killed me because increased extrogen causes my blood to begin to clot. Further, my entire family (cousins, aunts, uncles, sister, mom, and even husband) were tested for clotting disorders. Every single one of them had some sort of a clotting disorder or another. They are all now on medications to clear these. I have two healthy children thanks to knowing about Protein S and taking two shots of heparin a day (only when pregnant).
Again, this may not pertain to you, but with your history of a subchorionic bleed and if there is a history of any strokes, cvas, or heart attacks in your family, it cannot hurt anything. The test is expensive and that is why it is not performed on all women at their first OB-GYN visit, but my doctor says that in the next ten years it will be.