Kicks with anterior placenta, 21 weeks?

I have an anterior placenta but have started to feel him move a lot more, even though he feels a little "muffled". Is it normal to still feel him down low? Sometimes it feels like he's kicking me right in the vagina area, and then sometimes it's all the way near my ribs....is that normal for it to feel all over the place besides right in the middle (which I still do just not all the time) at 21 weeks?