What does sac out mean I had an early ultrasound

Patient: What does sac out mean ..I had an early ultrasound today at 4.3 weeks and she keep righting sac out … do I need to be concerned? ?

Doctor: Hi,Thanks for the query.I understand your concern.Possibly she might have mentioned that gestational sac is ob served in ultrasound.Usually by 4 to 5 weeks of gestation, gestational sac can be seen but to observe the fetal pole it may take one more week and to observe fetal cardiac activity six weeks has to be completed.So, better to wait for two more weeks and repeat the ultrasound.Take care