So I had a portable abdominal uss by the obstetrician last week at 6+0 he said there was a sac and it was in the right place. I've been worrying ever since that there wasn't a baby. Shouldn't there have been? I know my dates. I tried to be calm and said oh it's probably early for a hb maybe next week but didn't clock on til afterwards that maybe it means the pregnancy isn't progressing. I'm going back tomorrow and hoping he will do a quick scan again. I have a proper scan in the main dept maybe they'll do a vaginal scan next week too at 7+4 but I'm just nervous. Is it usual to just see a sac at 6 weeks?