Did anyone else's baby have a large abdominal circumference at the 21 week scan What does this mean?

yes at my 21 week scan babies abdominal circumference was 175mm which was larger than all my other measurements (fetal weight estimated was 455g) which i think measured more like 22 weeks, whilst all my other measurements were consistent with the 3 other scans id had previously - so it looks like my baby may be a fatty. However all my fundal height is consistent to menstrual age so maybe she had a growth spurt on the belly - midwife doesnt seem to think there is a problem. I dont look overly massive. yes at my 21 week scan babies abdominal circumference was 175mm which was larger than all my other measurements (fetal weight estimated was 455g) which i think measured more like 22 weeks, whilst all my other measurements were consistent with the 3 other scans id had previously - so it looks like my baby may be a fatty. However all my fundal height is consistent to menstrual age so maybe she had a growth spurt on the belly - midwife doesnt seem to think there is a problem. I dont look overly massive.