Ahhh normal je lah! Especially kalau first pregnancy, perut memang ambil time sikit nak nampak, some of my mum friends only started showing properly around 18-20 weeks, ada yang even later! Setiap body lain-lain, some orang slim sikit so harder untuk detect, and hormones/bloating also plays a role. Jangan risau, nanti tiba-tiba je perut akan grow sangat cepat sampai kau sendiri shock, trust me! As long as doctor says baby is progressing well, you're good to go.