Have you seen a reproductive endocrinologist? I've had 4 miscarriages and my doctor couldn't find anything. (I have a healthy 2 1/2 year old girl and had no problems getting pregnant or with that pregnancy.) I went to Dr. Samuel Chantillis at Presby Dallas and found out I have abnormal MTHFR, an enzyme that processes folic acid. He looked at the same tests as my OB and saw this. He's just more experience and knowledgeable about the "getting pregnant" vs an OB that's really focused on the pregnancy and delivery. I'm now on extra folic acid, B6 & B12. Hoping we'll get pregnant again soon and that this time will carry to term.
Hope you do too!