Just wanting to know when do you start to worry about reduced fetal movements?

I take it babies have slow or quiet periods? I think in general mine is a very quiet baby, he moves a bit a night when im resting and during the day im sitting at my desk, so i normally feel little pushes or big bubble like feelings popping!

just need a bit of piece of mind, im going for an anti-natal check up tomorrow so i will double check then, however what have you guys experienced?

Colleeg