I'm so so sorry for your loss...
I had a missed miscarriage, but the baby only stopped growing the day before or the day of the U/S...however, for those 2 days, I definitely noticed that my crazy cravings were much less than they had been...
I had no signs either, and took misoprostol (vaginally) to get it over with - it worked, cause I couldnt deal with the baby still being inside of me, mentally, it was too difficult...