38 weeks & a lot less movement!!

I am exactly 38 weeks today. Over the last week I have noticed a lot less movement. I don't feel her nearly as often as I used to.. Even if I drink freezing cold water & lay down she still doesn't bounce around. I had a doctors appointment on Thursday & they checked her heart beat, I told them about her movements & they said its perfectly normal.. I just get so nervous when I can't feel her move!!!! Is anyone else experiencing this? It's literally keeping me up all night because I'm so worried something is wrong. I have a schedule c section on the 27th of September I wish it would hurry up & get here so I can just hold her & know she's okay!