20 week scan

Dominique • Myles John 3/8/16. Micah Robert 6/29/17 baby girl due 10/8/20
I had my antamony scan today, my baby is around 12 oz. I know both my <a href="https://play.google.com/store/apps/details?id=com.glow.android.baby">baby apps</a> say the baby is suppose to be 10.6 oz right now. Is my baby big? Anyone else have a different measurement at their scan?