ok so me & my mom were talking the other day about how everytime you get a little contraction,or back pain,or w.e during your pregnancy the doctors/nurses always tell you to lay on your left side &/or drink a glass of water. why is that? what does laying on your left side do that laying on your right side or laying on your back not do? i know this may sound like a stupid questin to some of you but i was just wondering why your left side???