Concerning?

I’m 30 weeks and I have a anterior placenta. This is also my first pregnancy. In the beginning i didnt feel baby move much but no big deal I figured due to the placenta. Well he was doing great for awhile and passing kick count everyday usually I got about 10 kicks in 17 minutes and they were stronger kicks. The last 3 days he hasn’t passed kick count and his kicks feel much weaker? Should I go into labor and delivery to get check or is this normal? My ob isn’t open until Monday and if I call their emergency line they aren’t much help.