Found out I lost my baby today.

Went for our 12 week scan and found out we lost our baby about 3 weeks ago. I'm extremely sad and just Ina weird place. I told all of my family and they were so excited and now I have to tell them the baby is gone. 
Not only that, now I have to decide if I should go through with a D&C or let it happen naturally. My question is, if it hasn't happened yet, does that mean a D&C is a better option since my body isn't starting the process in its own? And if so, how early do you schedule the procedure? 
Just confused and sad. Prayers and help only please.