The app says 6 weeks and two days is it normal to only see a yolk sac ?!

Molly

I had a ultrasound today and there was only a yolk sac she said the pregnancy is in the right place in the uterus , but I’m scared ! She also Said I could be measuring early ?! I’m supposed to be next week 7 weeks and a day and we are supposed to hear a heart beat I’m just nervous since there was only the gestational sac and the yolk sac , anyone else have this problem ?!