Baby hardly moving

Hannah

I’m pregnant with my 3rd, started feeling flutters around 14 weeks. I’m now 19 weeks and I do feel him move and kick but not often at all. I’m a little concerned with how little he moves. I’m a very petite person so I always feel my babies move early and since this is my 3rd I definitely know what it feels like when they shift and turn and kick. My anatomy scan is at the end of the week and I’m just naturally worried there’s a reason he doesn’t move much.