I had an early trans vaginal scan last week which showed a gestational sac but nothing else. There was a little bit of shadow that the technician said could be a yolk sac but equally might not be. She dated the pregnancy at 5 weeks 2 days, which matches what I thought, but said she couldn't tell if it was viable. I then got my hcg levels checked and they came back really high - over 7,700. Apparently this means it's probably not a viable pregnancy because the levels are high but they didn't see anything on the scan. I have a follow up scan next week to confirm. Has anyone had this happen? What happens next? Sorry for the essay - I can't find anything about this online and I don't really understand.