5 weeks and a few days (check my sig for exact I cant think right now)... Had a smear of red blood 2 days ago and brown spotting since. Went in for scan today, there was a sac in my uterus and a 5mm fetal pole but no heartbeat. They also said that sac looked irregular so it could be breaking down. At 5mm you are supposed to see the heart. 5mm seems a bit big for the stage I am at... but still... Anyway, good luck to the rest of you and I hope this doesn't happen to anyone else.