Did gynae give you any medication to help pass out remaining tissue? Though natural mc is better then d&c, but there is also fear that tissue that remains may cause infection etc. For natural mc, gynae did give me medication and my tcm also ask me to drink 生化汤 for the same purpose too.
Sometimes our body takes time to react, since you are going back to gynae every week, I think dun worry so much as they are keeping close monitor on the progress.
Hormones can really go haywire, my first mc was at 9th week, pregnancy symptoms very strong, so never knew bb's heartbeat already stopped for 2 weeks. Gynae adviced me to wait another week for natural mc, but still it did not happen. So, no choice got to opt for d&c. For almost 1 month my body did not even know that my bb is not surviving in my womb, I am still having morning sickness etc. After d&c, my body also took the wrong signal, thought I had given birth, so I started produce milk and very engorged breasts. Its very sad then, i had to take pills to stop the milk production.
So every individual body condition reacts differently, dun worry too much, if really got doubts just clear with gynae, they are a better person to answer our queries. I am glad my gynae gave me her personal email to clear my doubts.