12 week scan tomorrow and a little nervous 😩

πŸ’—louiseπŸ’— UK β€’ Mummy to 1 prince and 2 princesses πŸ’™πŸ’—πŸ’— pregnant with our 4th little one our 2nd boy πŸ₯°πŸ’™πŸ‘ΆπŸ» due January 2020
Hi, it's my 12 week scan tomorrow and I will be 12+3, I'm really excited but also really nervous about it. 
I'm just nervous and scared something will be wrong with my baby as I have read so many horror stories on here about people going for their 12 week scan and baby having no heartbeat. 
I doubt I'm even going to be able to sleep tonight because of it πŸ™ˆπŸ˜©πŸ™