I'm sorry for your loss. It is often overlooked but the pain of losing a pregnancy is very real, and always accompanied by feelings of failure and guilt, like those you speak of here. Unfortunately, it is not always known why pregnancies miscarry. There are women who have had two or three or more miscarriages, and the doctors have no idea why.
You might want to try a more involved way of conceiving, like IUI or IVF (maybe your doctor can convince your insurance that you're entitled). 37 isn't young, but it is still a valid age for more than one child, so don't lost heart. Take your husband with you to the doctor, so she can help him change his mind.
