Any mommies experiencing decreased movement??

Michelle • Baby girl born Jan. 2016
For the last couple of days, my girl has been so sleepy! I'll feel her slightly move an arm and a knee occasionally, and I do kick counts and I'll only feel her move an arm! I'm going to eat a big hot meal and do kick counts again before calling the doctor. Is it normal for them to be moving a lot less?? Please tell me your experience! I'm 38 weeks BTW.