What week did you

So what week did you all see your fetal pole? According to my period I am 6 weeks. Had an ultrasound today and no fetal pole. About two weeks ago there was no sac at all, hand an ultrasound and saw a gestational sac, then had another a week later (today) and saw a a yolk sac. Doctors think I may be earlier than expected. Go back for another ultrasound in exactly a week. Making progress seems like and hcg levels keep rising. Someone pls tell me their story!