Another one of my collaborators is known around the blogosphere as Buscando La Luz, or Busca for short. She is a kindred spirit and a great writer. Her blog, Birth Faith is full of excellent information, well-thought out perpectives, and all delivered with kindness. The specific post I am pointing you to is Very Early Miscarriage. If you have ever had a late period and wondered if it was actually a miscarriage, you may find this post helpful, as I did. If you know you've had an early miscarriage and don't know where to turn for support, she has some great resources.
While you're there, make sure you check out her birth stories and some of Busca's other greatest hits (on the right side bar), such as Little Known Facts About Pitocin and Breastfed Baby Growth.