Cat, I am so sorry for your loss. Please understand that you are not alone. Miscarriage isn't something that a lot of people feel comfortable talking about, but you would probably find that many people around you have experienced a loss, and would love to help you through this time.
I had no idea until I experienced my first loss, that my own mother as well as two of my sisters in laws had also gone through miscarriage at some stage in their lives. It's heartbreaking how common it is.
The most important thing is to grieve as much as you need to. Take time out from life for a while and get yourself mentally and physically stronger.
You will find a lot of women on hear only too happy to listen if you need to talk. I have had 5 losses in my life, at various stages of pregnancy, but have had a beautiful daughter and am pregnant once again. It is hard to deal with the anxiety of pregnancy once you have been through a miscarriage, but you have to remain positive.
A fabulous friend once told me that in her culture a miscarriage is a sole trying to find you, but the timing isn't right or they aren't quite strong enough yet. She says that someday, somehow, that sole will join you, but sometimes it's a harder road than others. I take a lot of heart from that sentiment and know that there is a little sole out there waiting to join my family, as there is with you.