29 wks pregnant, babys movement decreased..?

I’m 29 weeks pregnant, and I have noticed over the past couple of days that my baby isn’t moving as much as he used to. I used to be able to feel his little kicks and punches all over and most of the day and night. Now I only feel them on the right side of my abdomen under my ribs. His movements now are very week and very few, not like my baby at all.. Has any one else experienced this? I’m thinking of going to the ER later this afternoon if he doesn’t liven up a little.