ttc after d&c

Kb
Hi all-
I had a d&c two weeks ago for a missed mc at 7weeks, stopped spotting a week ago. I took a pregnancy test this morning to see if the hormones were out of my system and it was one of the faintest lines I've seen (one where you have to squint & turn it different directions in the right light lol).  Last night I had egg white CM
My husband and I had sex late Saturday night because sometimes it just happens especially after going through this.  My doctor said to wait two weeks, we waited 13 days, so I'm not worried, but--
My question is- since I still had the slightest of HCG in my system, is it possible to get pregnant or even ovulate that soon?