Based on my LMP I should be 6 weeks and 5 days (my cycles are pretty regular and about 30 days) my ultrasound showed I was only measuring 6 weeks 2 days and the HR was 123 which the ultrasound tech said was a little lower than to be expected. Should I be worried? Not seeing my Dr for another few days and I've previously had 2 miscarriages so very worried this time around.