How stressful for you, hugs i hope you get good news in 2 weeks. 6 weeks is very early and often no HB is seen then, with DS1 scan at 7 weeks 5 days HB was slow and OB said either just started beating or was going to be another MC (internal scan), he is now 3 years old, 2 weeks later his HB was normal rate and speed.

Fingers crossed for you.