Only gestational sac (freaking out)

Kay • Baby Boy mom 12.2018💙👶🏽

Had my first ultrasound today and the tech was only able to see the gestational sac. They scheduled another appointment for me to come back on 10/12 because they say it’s too early.

LMP was 8/16

Ovulation date was 9/5

I’m crushed. Is it just too early? Should I be as concerned as I am?