C.C.
Hey C.,
My sister-in-law has had 5 miscarriages and all slightly before 12 weeks. After the first two they discovered that she had something in her body (an antibody of sorts) that would reject the baby. So, after they discovered that they gave her medicine and she got pregnant and carried to term. She ended up having a beautiful little boy. She has had two miscarriages since and after the last miscarriage they discovered she had a septum in the upper portion of her uterus. So, if this happens again, have them continue to search. Additionally, have you been to see a geneticist? They can perform additional tests to see of there are any chromosomal issues between the two of you that would also cause a miscarriage.
Hang in there. From everyone I know who has been through this it's a continuing process of discovery until they can find the cause.
If it gives you any comfort, my husband and I have been trying for three years with no success. We finally got pregnant in April, using IVF, and are due in January. There is hope!