Hello po. Sonologist here. Usually at 5 wks, makikita yung gestational sac. 5.5 wks, yolk sac. Then 6 wks, is the embryo. Your obgyn will suggest to repeat scan 2 wks later para ma kita na yung embryo kasama yung heartbeat ni baby.
normal po. usually naman po talaga nagkakaroon ng heartbeat around 6-7weeks po pero mababa pa po heart rate
Vea Veloso Brillante