I just went through my third miscarriage April 15th of this year. The doctor's appointment where it was discovered took place on our 11th wedding anniversary (made for a real cheery celebration that night), with a D&C scheduled for the next morning. We have children already, but we were excited about this pregnancy and looking forward to growing our family. It was heartbreaking, truly heartbreaking. The biggest difference between this miscarriage and the previous two was that I had an inkling things were not going well this time (I had had some spotting before the appointment). I spent a lot of time praying beforehand with a dual request. The first part was a prayer for the pregnancy to be preserved. The second was an acknowledgment that this might not happen and was a request for the ability to be at peace regardless what happened. I have been sad over this loss, but the prayer for peace was answered throughout the following days. I was sent the kindest and most compassionate medical personnel I have ever had the privilege to interact with, and somehow, having them express human feelings of sympathy for my loss and bearing my burden with me, even though I know they must frequently see women in precisely my predicament, was to me another answer to prayer, as it brought much comfort in a time of despair and sorrow.
It helped that the physical recovery was quick and easy. I felt physically normal almost immediately (I was also between 6-7 weeks along). In some ways, it was a relief because I had been so tired, and my energy level returned to normal quickly. Being physically capable of doing more allowed me to lose myself in being active and busy. I also made sure to enjoy my living children more. I love them anyway, but there was an increased sense of appreciation for their presence in my life above and beyond what I normally experience with daily activity.
I don't know if you have other children, but my first miscarriage was before having any, and it was the most horrible sense of incompleteness I've ever experienced. I'd never before dreamed it would be difficult to have children (I come from a line of fertile women!). It was hard not to obsess about it. My dad gave the most helpful suggestion when I was wallowing in my misery. He suggested I immerse myself in learning more about a subject that interests me (preferably unrelated to children or childbirth). I did and discovered a whole side of myself I had never known existed before. It didn't make the sadness disappear but was an excellent distraction in the meantime.
You may go through a difficult time in the days/weeks/possibly months or more to come, but as with all heartbreak, eventually the pain lessens with the passage of time. If you are religious, prayer helps tremendously. Whether you are or aren't, you can find things to take your mind far away from the subject, whether time with friends and family or immersing yourself in a hobby or creative endeavor.
My only other advice is about other people while you're dealing with this loss (and sorry that this post is so long and about to get longer):
-Don't assume that your husband doesn't care if he isn't as emotional about it as you are. Most men don't grieve miscarriages in the same way their wives do. I don't think it's really real to them yet, and they haven't physically experienced the pregnancy like we do. So try not to become sad or angry at him if he isn't reacting to it the way you'd expect him to.
-People (bless their hearts) will try to "help" you by sharing the horror stories of their own and/or everyone they know who has experienced anything similar or connected to your loss. It is truly horrifying to hear about other people's losses, especially repeated and/or gruesome experiences, that for some reason they feel inclined to share in graphic detail. I've never figured out why people think this will help when the loss is so raw to you, but know that they, in their own bizarre way, are trying to help you feel less alone (and are probably still trying to come to terms with their own losses too). By the way, I'm not talking about anyone on here; but I've experienced this with all three of my miscarriages.
-Don't feel guilty if you are sad or resentful on Mother's Day or when you see pregnant women or friends or family members who have little ones. It can be a painful reminder, and it is absolutely normal to have those feelings. At the same time, believe it or not, it can be a healing moment to love on the newborns of your friends and family or to just enjoy the sight of a little one. It doesn't lessen your own loss, but there is something beautiful about just celebrating that little life. (This was my experience at Easter, when I got to snuggle with the my newborn niece and my newborn nephew.)
Again, sorry this is long, but my heart goes out to you and any others who are or have experienced this kind of loss. I hope you find the peace and support you need.