Small femur 32 weeks

Has anyone been told their baby’s femur length is short? We had our 32 week growth scan 2 days ago and his femur length measures <1st percentile while all other measurements are in the 80s. It was behind a bit too at the 20 week anatomy scan but in normal range.

My doctor isn’t concerned because everything else looks good but we’re doing another scan in 4 weeks. I’m so worried!!

Has anyone else had this happen with their babes? And what was the outcome???