when i am in 37 weeks, my baby move more. If you baby is not moving much.. try eat something sweet.... best is call your doctor and come in for check up... Hope everything is okay...
As Limonada said, towards the end of pregnancy you do tend to get reduced movements because the baby doesn't have much room to move around. However, to be on the safe side, it's probably best to speak to your midwife or doctor about it, they may want to send you for an ultrasound just to make sure everything is ok.
If you're really concerned, then you should speak to your doctor, but I'd say this is pretty normal: as the baby grows, she'll have less room to move around. My baby also has periods where he/she isn't active at all....