I'd go talk with your doctor; there are quite a few reasons that this my be occurring. I'd follow that up with seeing a sleep disorder specialist as well. If you're hitting him with your leg you may have restless leg syndrome. Other causes could be sleep apnea which may cause your body to suddenly jerk when you are having an apnea episode.
I'd rule out all of the medical problems and then, if needed, seek counseling. It could be subconciously your mind is trying to protect yourself and your child from a perceived danger in your sleep and your body is acting accordingly.View Thread