Ay nako, I totally get the worry! A few of us mums din nag-experience ng faster growth, kaya definitely bring this up sa OB mo sa next visit, hindi lang para sa baby's size but para ma-rule out din ang gestational diabetes or pre-eclampsia, especially since that's on your mind. The good news is your OB is monitoring closely with those ultrasounds, so if may something to address, makikita niya agad at may time pa kayong magtrabaho on it before your CS date, kaya breathe lang muna