HELP NO HEARTBEAT

Elisabete • Mother of 7 loves doctor who trying again
I went for an ultrasound at 5 weeks 4 days had no heart beat but they said yolk and sac was there and to go back in 2 weeks 
Yesterday went back and I was 7 weeks 4 days and still no heartbeat but baby grew I'm heartbroken is my baby dead ?
I've had no bleeding no cramps 
I'm gonna ask doctors today for bloods and hopefully another ultrasound in another week or two but m I kidding myself ? Or m I gonna loose it ? 
This pic was at 5 weeks 4 dayd 
This is at 7 weeks 4 days 
How can a baby grow and have no heartbeat are they saying it died this week ?