Ultrasound worries

I am going to have my first ultrasound at 6 weeks 5 days tomorrow. I am so nervous about not finding the baby or not having a heart beat. I am so worried and I do not know how to stop worrying. This is my third baby so I have been through it all before. I was always like this with my previous babies, but this time around I feel like I am more worried since I am a lot more educated on blighted ovums and missed miscarriages. I guess sometimes it is good when you are not “so educated” on all topics.