Ay, don't worry mama, iba talaga ang buntis sa buntis, some of us show early, some later, at lahat normal lang! The important thing talaga is what your OB says during your check-ups, not what tita or neighbors comment, kasi sila hindi nakikita ang baby sa ultrasound at ang growth niya week to week. A few of my mum friends looked smaller than expected too but their babies were perfectly healthy, so mas safe na i-confirm with your doctor kung okay lang ang size ng baby mo at ang amniotic fluid, that way you'll have peace of mind instead of wondering! You're doing great already by making sure baby is healthy inside.