Hi mums - mums to be...

I just came back from my 1st scan and had the bad surprise to find out a clear (empty) sac in my uterus (no embryo has developed).
Last periods were July 7th, positive pregnancy test on August 4th so supposedly 9 weeks pregnant, but with no baby!

My obstetrician gives me until next thursday to have a natural miscarriage before talking D&C. I would really like to avoid a D&C and go all natural! I'm looking for any good tips/advice of natural miscarriage induction to help my body do its job.

Thanks a lot in advance for your help!