Anterior placenta and movement worries....

I'm currently 34 weeks and I'm really worried about how much bubs is moving. I have an anterior placenta so I know that I could be feeling less movement than other mums, but sometimes I will go days and only feel her shifting every once in a while. Every time I go to the hospital to make sure that she is okay they tell me she looks perfect, but I have been told that I need to be keeping a kick count. I'm getting more and more worried because I feel like with how big she is now (four pounds 15 ounces at last weeks app.) that her movements should be more noticeable. Did anyone else have an anterior placenta and what were their bubs' movements like at 34 weeks?? I would have a lot more peace of mind if more mums had the same issues.....