I had my first ultrasounds (both abdominal and vaginal) on 1/29, and the tech was able to show us the yolk, fetal pole, measure the heartbeat (130 bpm), and date
at 7 weeks. She said that the ultrasound didn't look quite right to her, though, and she thought I might have a retroflexed uterus, so she referred me to a specialist. I saw him the next day on 1/30 and he did an abdominal US (no vaginal). He said that there is no fetus, no yolk, no fetal pole, just an empty sac.