A general reply to a bunch of posts here You have to realize how powerful Palpatine was with the dark side. He was influencing the entire senate, and all the clone troopers, and obviously Anakin...

Alot of energy is used up by women in child birth. Add to that anxiety and a woman could die in child birth like that. People have heart attacks when they get too excited. So this is no different.

I like Ian's explanation better. Yours might be plausable if it were the middle ages, but not in a society that mastered intergallactic travel.