28 weeks no movement

Nicola
I'm 28 weeks and 5 days and haven't felt any movement in 24 hours . Booked in for scan at 11:30 today; fingers crossed for us. Just wondered if anybody else had this and whether babies do have quiet days / periods where they're in a position you don't really feel. 
I have an anterior placenta which I know cushions a lot but last few weeks my baby has been really active so this is a change form her norm X