Hi I've had light bleeding, no pain. Had an abdominal and internal ultrasound on Tuesday, there is a yolk sac and foetal pole present, we were told it was 4mm in length, however no heartbeat. I was told by my doctor i was 10 weeks however I have been told by the sonographer and another doctor there's no way I'm 10 weeks and am more likely to be six or so. Next ultrasound is this Wednesday. Is it likely I'm miscarrying?