I'm so so sorry to hear that. No mother to be should ever have to go through that. A long time ago I was told, miscarriages are natures way of taking away a baby that will be extremely deformed or hindered in such a way its life would be pure pain and misery... So don't beat yourself up, maybe this isn't the right time for you, but you will eventually have a beautiful baby.
My cousin in law went through about 3-4 miscarrages before finally having 2 beautiful children.
*hugz*