Hi Kristy Lee. Firstly i'm so sorry for your loss its a horrible horrible thing to go through.
In regards to when you can try again i'd say whenever you feel ready emotionally and physically i've been told that its best to at least wait for one AF. I had a m/c at 6 weeks and my Dr. said it would be ok for me to try again whenever i felt ready. A friend of mine had a m/c at the same time as me and she was 8 weeks and her Dr. told her to wait for 2 AFs but if she fell pregnant after one AF then that's ok too but neither of us had to have a d&c so mabye just check with your doctor and ask. But i would think at least wait for your AF to return so that you know your body is back to normal and it'll also give you time to heal emotionally..
I hope that helps some, Big hugs to you