one week until first ultrasound

I am going to the doctor next week for my first time to hear my baby's heartbeat. I am so scared. We are going one year almost to the exact day as my first ultrasound last year. That test did not go as planned. Instead of hearing our baby's heartbeat we saw nothing but a sac and they called it a blighted ovum. I ended up having a d and c 3 days later. I was heartbroken. Now we are just one week away from the same test and I'm terrified it might happen again! 🙏🏼👼🏼🌈