Concerns on 7th week ultrasound

Te

Hi,

I had my first ultrasound today at 7 weeks as I m spotting since the last 5 days. Doctor see a gestational sac but don’t see a yolk sac. She can’t trace a heart beat either. She asked me to come back again next week for another scan. Has one one experienced the same situation and ended up having a healthy baby or pregnancy? I am very devastated and hoping for a miracle.