Small uterus

Bex • 🧚‍♀️ 2010 🧚‍♀️ 2017 🧚‍♀️ 2018 🧚‍♀️ 2020 girl mama
Im 32 weeks measuring 28cm this was the same as my first i had 2 growth scans for her and baby always measured well at scans but my fundal height always measured to small. My midwife said i may need another growth scan for this baby but im sure itll be the same thing. Anyone else having this problem?