What’s most likely?!

So, I had a D&C on 5th August (3 weeks ago) after a MMC. (This is our 6th loss)

Glow says I should have ovulated 8 days ago (obviously I know this may be massively out, given the mc), and today I’m having period type cramps.

With my last D&C it took me 7 weeks to get my period back and I was at about the same point in the pregnancy.

What’s more likely, do we think? I’m just getting my period back much sooner than I expected or could be potentially be experiencing implantation?? I really don’t want to get my hopes up!