I had a scan with my last daughter at 6.5 or 6.3 weeks and all we saw was a yolk sac. they thought my dates were wrong but they werent wrong. I had a scan this time around at 7.6 weeks and the baby meassured at 6.5 weeks with a heart beat. It all depends on the baby. you may or may not see the heart beat. If not then don't worry it is still early. I know someone on here that saw the hb as early as 5.5 weeks I think.