I went to a private scan 2 weeks ago to only see the sac and yolk but no fetal pole 2 weeks later I returned to see a great strong heartbeat but I'm only measuring 6 weeks 1 day when I should be 2 weeks ahead I know I ovulated on time as have been trying for a year so have been monitoring everything. I have 4 weeks until my '12 week scan' I'm happy I've seen a heartbeat but so worried in measuring do small, has anyone advise or had anything similar? I'm in the uk and can't keep affording private scans so I have to hold out for 4 more weeks