I’m so scared

Okay... so I know this might sound crazy.. but I am scared I’m going to go to my first prenatal appointment at 8 weeks and they either tell me I’m not pregnant or that my baby doesn’t have a heartbeat. I don’t know why I feel this way... I have a bunch of symptoms and my pregnancy test was VERY positive so I have no idea what makes me feel this way ... maybe I’m just a nervous first timer... but does anyone have any stories that to share will make me feel better about this?❤️❤️