Hi ladies! Needing encouragement

First time mom here of a one day and 8 hour baby boy! Delivered him right at 40

Weeks. He only weighed 5 pounds 15 ounces. Doctor predicted 7.5 pounds.

The pediatrician told me he’s concerned for his birth weight and kind of asked if something happened during my pregnancy that would cause it. I didn’t have any complications or health issues.

He’s been perfect though! Regulating body temp, has perfect blood sugar, nursing and has had two poops already.

Has anyone had a full term baby the size of my boys and everything turned out okay?