Could have a misdiagnosed miscarriage if no heartbeat seen at 7 weeks?

Probably not: If the baby (fetal pole) measures 7 weeks and there is no heartbeat seen, it is a miscarriage. The times when we aren't sure are if the fetal pole can't be clearly seen or if the dates are less than 6+ weeks. At that point, we might need to repeat the us in a week to be sure. Even if a miscarriage is diagnosed, you can take the time you need before doing anything about it like a d & c.