Answer by
proudmom (11)
It's quite possible that your ultrasound was performed too early. Usually, the yolk sac and heartbeat appear around 5 1/2 to 6 1/2 weeks, so if one isn't found on the first ultrasound, a repeat ultrasound should be performed 7-10 days after. It's very common for conception dates to be a few days off. Talk with your doctor.