Trish - i had my ultrasound on the day i thought it was 6 weeks, and there was no heartbeat. He said as long as its less than 6 weeks (even 1 day under), it is really hard to judge dates accurately etc.

When i went back, he moved my date forward, which should have made the day i went for the ultrasound 6w1d, and def. should have got an accurate date, but whatever.

Anyway, i just wanted to say goodluck, i hope everything is fine, and like somebody said, if its off only by 2-3 days or something, then it could still be ok.

I hope everything is ok, and that coping with the worry is also ok, as i'm sure this is a very worrying time.