Hay, congrats sa pregnancy! Hindi pa usually, 13 weeks is still early para maramdaman ang baby movement, a few of us moms namin, parang 16-20 weeks pa kami nakaramdam ng actual kicks, especially kung first pregnancy mo. The baby is there naman, just very tiny pa and nasa likod ng placenta or uterus wall, so you can't feel the movements yet, pero sa ultrasound makikita mo na talaga siya moving around!