First ultrasound. Sac but no baby..

Cheltsey • Expecting my 🌈👶🏼 May 2019

I went in today for my 8 week ultrasound. Come to find out.. I’m only 6 weeks. I ovulated late due to a miscarriage. In my ultrasound they could see the sac but not the baby. They said this is very common and that I shouldn’t be worried. But how do I NOT? This is my first baby. 😅 so I’m now getting my blood drawn today and Wednesday to make sure my HCG levels are rising. I go back for another ultrasound in 2 weeks. Anyone else experience this? I want to hear your stories.