Has anyone went in for an early ultrasound and couldn’t see anything but the pregnancy turned out ok?

I went in for an ultrasound and according to my period I’m 7 weeks 1 day. The ultrasound pictures just showed a empty circle but when she had it in live mode and was watching on the screen she said she believed the little dot she seen was the baby and it was just too small.

I’m scheduled to go back in 2 weeks for another ultrasound but it’s really bothering me.