Don't know if I should be concerned..

Baby girl is moving, but her movements have changed a lot.. she was constantly moving all the time before I hardly got a break from being kicked.. now I'm here wondering where she is and will often forget I'm even pregnant because she used to be a constant reminder with her painful kicks. Should I be concerned? I went in a bunch of times for reduced movement with my son and he was always fine.. I'm just not sure because she is definitely still moving, just not like before..