I had a D&C back in November, and my doctor recommended I wait 1 cycle. When I went in for my check-up, I pretty much begged him if I could go ahead and TTC right away. He explained that after a D&C, it is best to wait to allow the endometrial tissue to fully heal. So, as much as I didn't want to, I decided to go ahead an wait that 1 cycle.
Just wanted to give you my personal experience. I hope that helps...
g/l whichever way you decide to go