Hello, Allison...
I've been through exactly what you're going through ... only twice.

First was at 9 weeks, second at 13, within a year of each other.

It's not fun and there's no easy way to deal with it. You may want to get the word out to your family soon so that you don't get any more cards. Not only that, but hopefully they would be able to help console you. In all likelihood some of them have been through it as well. Roughly 30% of all pregnancies end in miscarriages. So sorry to hear this.
Rest assured, there is still hope, as despite our hardships, we are currently expecting our first LIVE child in less than two months!!!!

I encourage you to use some of your family get-togethers to help cheer you up. You may not be in the mood to celebrate right now, but I would hope that they could be a little bit of relief in this rough time.