You should keep track when your about 28weeks! It really depends everyone is different!
I'm 25 weeks today and my princess moves nonstop.
Honestly its diff wl diff people my first child she never really did alot of moving( that i felt anyway) this time around wl my baby boy its like he never slepps its constant moving even making me uncomfortable at times he moves so much:)
I'm 19 weeks my baby boy kicks a lot mostly when I lay on my back or am sitting up but everyday