Wondering if any other 2nd time Momma's have any feedback? My first pregnancy I had placenta on the…

Wondering if any other 2nd time Momma's have any feedback? My first pregnancy I had placenta on the front and still I started feeling movement at 17 weeks and then it got crazy from there! I am now 18 weeks with number 2 and have felt minimal movement so much that I question if I'm feeling it at all. Could it just be a laid back baby? Anatomy U/S is next week.