Due date pushed back

I went to my high risk doctor yesterday due to my hyperemesis. I was supposed to be 8 weeks 1 day but baby measured 6 weeks 1 day. A heartbeat couldn’t be picked up on ultrasound but both the doctor and the ultrasound tech agreed they see a flicker. He wants me to come back next week to be scanned again. He’s fairly confident that the pregnancy is viable since I am so sick and I’m have other strong symptoms still. I’m praying there’s a good visible heartbeat next week and the baby continues to grow.