Maternity Leave?

be  fully prepared. My mom said with me (her first child) she left for maternity leave as early as possible, but with my brother & sister she knew more of what her body could take. I don't want to go into labor at work, but I don't want to leave too early. I just feel like if i stay at work too much longer, my worst fear of my water breaking etc will happen. As far as talking to my boss, how do I even begin to start with him? He is a guy with no kids so I figured it's gonna be a little harder to talk with him about it. Any advice is appreciated!! :)