20 week ultrasound percentile

Stephanie

Hello, so we had our anatomy scan at 18w6days, baby was measuring at 19w4d, and she said the overall percentile was 39%. she said since I'm a smaller woman, 5'5" 132lbs that this is ok. anyone else in the same range? I've done research and people said it's normal, this is my first so I don't want to freak out.