31 WEEKS pregnant im supposed to be doing a kick count everynitte but my baby doesnt move around alot or at?

least .i cant feel it I went a couple of weeks ago for fetal monitoring and the nurse kept saying your baby is moving alot dont u feel that and i was like nope..... so what can i eat that is sweet to get her going???? ive tried ice water oj and cake what else will do it ... sometimes she is moving during the day and sometimes i dont feel her at all and I get freaked out any advice