Conflicting advice

Dolls2011

So, I am 38 wks 4 days and I feel like the baby hasn't been moving much today. I ate sugary foods, drank sugary drinks and ice water, and laid/sat in every position possible. No change.
Everything I read and hear says that the baby tends to move less at this time because space is limited. However, my OB says to call if I notice a decrease in movement. So needless to say I'm a bit confused.