I was told same thing. Baby was 7 lbs at birth and she was two weeks early.

The same was with me

@nanadona15, she just measured my tummy and said that,so she made an appointment for ultrasound to see if the baby is developing i hope he is

The ultrasound can be wrong on +\- 1 lb., so it depends. My baby was small too by ultrasound, low weight. On delivery was 3,050kg. Normal. Don’t worry