Baby weight

Hi mummies! FTM here. Just went for my 29w4d check up and baby was measuring small(?). She's weighing 1.225kg as of today and my gynae did mention she's small and would like to do a detailed growth scan. Can mummies advice if baby was weighing around the same at around the same gestational week? Thank you! To note, I am 148CM and my husband is 165CM.