I found this on another blog, and it sums up perfectly how I am feeling.
"After a miscarriage, you grieve for a person you never knew, and for a relationship that ended before it really began. You grieve not for a person who has lived and died but for an unlived life. You grieve for the loss of your future as the parent of the baby who has died. You are sad not just because of what you have lost but because of what will never be."