First baby. Pregnancy, 17 weeks

Madison

I'm almost 17 weeks with my second pregnancy. First ended in ectopic, anyhow I am curious to know when you ladies stomachs started to form and grow and take place?!? My dr keeps saying I should be feeling the baby move soon and I'm just like...... why isn't he moving and why in the world does my stomach hardly look pregnant. Idk😑 help ! Just curious when does it start taking shape