Baby weighing in small

Shkerra

I’m so confused at first my baby was weighing in small but today when i went to my ultrasound they said baby is 3lbs 7oz and said they prefer him to be 4lbs mind you I’m 31 weeks pregnant 🤰🏾 so i decided to do my own research and everything shows that 3lbs and 7oz is good for the baby at 31 weeks I’m so confused 🫤