bleed just a little after miscarriage. sign of tissue still in there or could it means it's completed?

Wina
I was 7 weeks pregnant when I miscarriage. From what I read and what the doctor told me, I should expect bleeding like my period that can last from ranging days to weeks.
But in my case, on the day of miscarriage 1 large pad is enough for me the whole day and it's not even full. The day after only 1 regular pad and after that thick panty liners able to manage the bleeding. there is becoming even more less than the spotting i got during my pregnancy.
I took misoprostol on second day after my miscarriage to help the process. Now I'm very confuse. Is it normal to only bleed a little? I bleed wayyy more on my period.
Anyone experience this? 
Could it be the tissue hasn't passed out? Or could it be the miscarriage process already complete? Up until today i still experience a bit of cramp and uncomfortable in my lower belly. 
How could we know if the process already completed?