Hi Shannon, I'm sorry for your loss.
I had a d&c at 8wks 5 days. My ob told me I would get af approximately 4 weeks after d&c and said we could ttc after that. I've read articles on the net that say that not waiting one cycle can increase the risk of another miscarriage and I've seen some ladies on forums who've said they miscarried the 2nd time and wished they'd waited one cycle. However I know there are also a lot of women who go on to have healthy pregnancies and don't wait the one cycle.
For me, I waited the one cycle because I want to give this every chance of 'sticking' and also I think my ob would give me a rap over the knuckles if I didn't listen to his advice! Seeing as he only told me to wait one cycle though, it hasn't been as hard as if he'd advised me to wait longer. Good luck to you.