Did the hospital give you an US to make sure it was a complete miscarriage? if not, get yourslef to a hospital ASAP.

I don't want to scare you but my mum nearly died after a miscarriage from having a piece of retained placenta the size of a 10c piece.

Or if you can't get to a hospital till tmorrow maybe ring one of those nurse on call places and let them know how much blood etc.
Hope it's normal honey xoxo