A.,
First, I am very sorry for the loss of your child. Second, I have a lot of opinions on this subject, so I hope I can help and do not offend you in any way.
In December 2004, I gave birth to identical twin boys. One son is healthy. Our other son died from a cord accident during delivery. They were 36 weeks -- pretty much full term for twins, as you probably know. I tell you this so you know that I understand your pain. Some may dismiss this as "only a miscarriage" or say awful things like "miscarriages happen because there is something wrong with the baby". Ignore all of that and, if necessary, distance yourself from anyone who makes those insensitive remarks. That child is and will always be a part of your family. You had plans for him or her. You already loved him or her. This baby matters just as much as any other child. You have a right to grieve, and in order to be healthy again, you MUST grieve. And there is no timeframe on how long that will take you. Also, people are wrong when they say you will get over it. You don't get over it, you absorb it and it becomes part of who you are and part of your personal history. Yes, it does get much easier to get through each day, but you will never forget this child, and you don't have to forget this child.
The NICU nurses recommended this really great group to me and my husband -- Neofight -- www.neofight.org or ###-###-####. I HIGHLY recommend getting in touch with them. You have to talk about this loss, the awful experience of the D&C, the moment when you found out your baby was gone, and all the other very difficult moments that happen when a baby is lost.
Also, I'm far from a professional in dealing with this, but you can also email me directly. If you are interested, I can get you a list of some of the books we found useful.
Above all, take care of yourself, claim your right to gireve your child, and know that time does make it easier to find happiness again.
K.