I found out about a mmc in July and had a D&C in August. I ovulated again 2.5 weeks after that but we didn't try that cycle. We started trying in September and no luck, but I got pregnant in October. So I guess 2.5 months total time to conceive after mc.
It was similar with my chemical pregnancy. We tried right away after it for 2 cycles and no luck, then did not try for 2 cycles, but the next one we tried I got pregnant (and have a toddler now).
I know this time is stressful and the wait feels very LONG. Good luck... xo