Yes, mommy. Most accurate na utz po according sa OB ko is yung first transvaginal utz which is during first trimester. Yung mga succeeding utz ay magbabase na sa weight at laki ni baby.
Yes ung size ni baby... so may chance na if di tugma either underweight si baby or overweight. May normal range naman un, so if yung gap ay maliit lang, then it's ok
♡