It's always good to call if you're worried about movement.
Drink some sugary or strong like a soda or some or cold water
Drink a cold glass of orange juice anfd lay on your left side in a quite room for 30 mins if that doesnt work then ring the nurse
Go to the er if you feel anything is wrong
Try a warm bath that always woke my little girl up x
Also bub will so slow the bigger they get as there is less room to move x
Babies don't stop moving as they get bigger. They move just as frequently, in fact you'll feel them more as they get bigger because they're taking up so much space you feel every tiny twitch and wriggle.
This has happened to me a few times I was also worried, I am 37wks now but when I was about the same as you I didn't feel him move either,he was sleeping. I've noticed if I eat some chocolate he moves around like crazy. Don't stress out he is probably sleeping. I went two days without feeling him and the doctors said everything was fine.