Eh, fundal height 38cm at 36 weeks tu memang boleh normal range lah, setiap mummy berbeza, depends on baby size, amniotic fluid, and body type kau. A few of my mum friends ada yang 36-37cm, ada yang 40cm++ at the same week, and semua babies lahir fine je. Tapi to be safe, better check with your doctor at your next antenatal visit so they can measure properly and make sure everything's progressing well, especially since they'll assess it against your previous visits and ultrasound results, that's what really matters more than the number itself!