Ha, depend la on your body type and how the pregnancy hormones treat you! Aku dulu at 13 weeks memang macam bloated je, bukan tummy buncit lagi, mostly gas and water retention. A few of my mum friends though, diorang dah start show proper bump around that time, terutama if they're petite or second pregnancy, masing-masing lain la. The good news is everyone blooms on their own timeline, so jangan stress if your perut still flat or if it's already looking obvious, both is totally normal!