Yesterday at 5 weeks and 2 days I went to get a ultrasound done at a place and the lady said I measured about 5 weeks and 2 days but there was no yolk sac. Should I be seeing a yolk sac? Little worried.. But I'm thinking I'm just too early and I know 1 day makes a difference so I'm gonna go back in a week to get another one. Won't be seeing my ob for nearly another month so getting ultrasounds done is putting my mind at ease. Anyone have this happened and later found a yolk sac, baby and hb?