If you're a control freak, working mom might not be the best option for you unless you want to have a miserable spouse, kids, and well... self. Being an educated, career-minded woman is an amazing thing! Being a loving, caring mother is also an amazing thing. Be prepared to lose a little control though, if the twain shall meet. I don't mean to scare you, it's not a bad thing. You just definitely need to learn to roll with the punches and change on the fly.
Bottom line... go with your gut. If you want to try to be a working mom, go for it. If you decide you want to be a stay at home mom, go for it. Don't shy away from staying at home because you think it will hurt your career, unless of course that is what's really important to you. I stayed at home and couldn't get a decent job for a while after I re-entered the workplace. Yea, that sucked but I eventually bounced back. However, I have three wonderfully smart children that I got to spend a lot of time with and mold into successful people. Life will unfold as it's intended, just keep your eyes, ears, and heart open along the way.