6 weeks no heartbeat yet...should I be worried?

Shams
Hello everyone,
This will be my third baby (hopefully). I went for an ultrasound today and measured 6 weeks, however there was no heart beat or fetal pole. The technician said it's probably too early and I'll go back in 10 days for another. I also don't have any symptoms besides a little fatigue. I am trying not to worry but wondering if anyone has had a similar situation and everything worked out well. 
Thankyou! 

Glow Resources

Let’s Glow

Glow is here for you on your path to pregnancy

Glow helps you navigate your fertility journey with smart tools, personalized insights, and guidance from medical experts who understand what matters most.

25+ million

Users

4.8 stars

200k+ app ratings

20+

Medical advisors