Baby movements

Anyone else’s baby’s movements changed recently? I am 30 weeks along and for the last week or so my son’s movements are not as strong and sometimes I can’t feel them but I can feel him in certain area. I had an appointment on Monday and his heartrate sounded good. I did mention this to my doctor and he wasn’t concerned but I just want to know if other mamas are expecting the same thing. My placenta is fundal if that means anything.