Worried bc I don't feel pregnant

Katy
I have been pregnant 3 times before now. One abortion (when I was young) and two miscarriages. My last miscarriage was a year ago. I went in for my US and there was no heartbeat. My baby had died a week earlier. I was feeling real nauseous early in. Now I feel nothing. My boobs are not even that sore. Should I be worried?