Anyone baby measuring off?

melissa

I’m supposed to be 9 weeks 5 days today but my ultrasound said 6 weeks 2 days. They said I could be that far along and baby is just small or that my period date was off or late ovulation. They did say baby looked good and had a heart beat of a 6 weeks at 82 bpm. So idk what to think, I’m trying not to worry and hope the baby keeps growing and looks good at my next appointment in two weeks.