My last appointment at 33 weeks my doctor measured my belly like always and then said she thinks baby is measuring small. She said I will need to get a growth ultrasound before my next appointment at 35 weeks so they can check on his weight. This whole time I’ve measured on track until now at the end? Is that common?

I’ve also heard the estimates from these ultrasounds can be really off! Now I’m worried my baby is not growing properly! Did anyone experience this??