Fetal weight

My last ultrasound is nong July 15 Ang timbang po ni baby is 1.56 kilograms which is 31 weeks and 1 day na po Ang tiyan ko at normal lang daw po Sabi nong nag ultrasound sakin, may ibibigat pa po ba si baby? My EDD is on September 8 I'm on 38 weeks and 6 days now. I'm worried po kasi Sabi ng iba maliit daw po so baby. #advicepls