How long for body to expell fetus during MC????

How long did it take for your body to expell the fetus/embryo naturally? Please share if you've been through MC. I'm 7-8 wks and started to bleed very lightly on the 21t . It's still going on very lightly I have not seen any thing come out as far as big clots, tissue, or the yolk sac. Please sare