Period after miscarriage/ birth

Jessica

Bit confused :/

I was 14 weeks and 3 day pregnant on the 29/10/2017 sadly I gave birthday to a beautiful little girl that passed away.

Not bled since but was told should get period in next 4 weeks it now nearly 6 week and no period I have done 2 test both negative! Any help is grateful

When should I be due?

Could I be pregnant again but not showing?

How long does it normal take for your body to get back to normal

Thank ❤️