I think I am freaking out over nothing but I am hoping you can give me some insight. I went in for an ultrasound at 6 weeks 3 days and they saw a yolk sac and a heart beat flicker at 117 but she said that she isn't able to measure so I may not be as far along. So how can we see a heart beat but not able to measure? I go back in 2 weeks for another ultrasound.