The long await

I'm trying to patiently wait til my 6 weeks is up after my d&c. Ive got 12 days left til 6 weeks.. 4 weeks today since we lost our baby preterm. We slipped 2x and had unprotected sex and I'm startin to get nervous and think we may be expecting again. I know the dangers of getting pregnant to soon and my doctor and i have talked. She is prepared to make sure i have the healthiest pregnancy the next go around no matter when it happens... how long did it take for others that experienced a lose or have d&c to get their period after?