How often does a baby kick in the womb? or do they just kick when ever?

It depends: My wife thinks it has to do with the baby's personality. Our first, who is high energy, seemed like she was on a caffeine drip. Our second, who is much more easy going, had my wife at the OB twice to make sure she was ok and still there. So as long as there is movement, and it's what you're used to feeling, and your OB is cool with it, then you're fine.