We have very SIMILAR situations
Me, I had my D&C at 12 weeks on Dec 22 (baby was 8-9 weeks in size). And that ultrasound was such a terrible time. I just had a meltdown.
Finally I had gotten a negative pregnancy test on about December 18th (4 weeks after D&C). I started using OPKs a few days later. We weren't going to try right away, so I wasn't using them religiously. But I happened to get a + on Dec 25. We decided to try, but didn't BD until the evening of the 25th. It was our first time having intercourse since the procedure (doctor told us to wait a month for sex). So that was our one and only time and I kinda hope it wil be successful, even though I am sort of worried about the condition of my lining.
Do you feel that your lining is strong enough? You had a period, so yours is probably in better condition than mine. But sometimes I feel like the w hole month I waited just to get a - on HPT might have been good enough for the lining to build.
Good luck to you this cycle!