I have fears like that too, and I've heard that is mostly from being a first time mom. I'm still super paranoid of things like this happening, but more than likely it won't happen to you. Try to enjoy your pregnancy and not think about things that are out of your control, that what I'm trying to do and it eases the anxiety. I hope everything goes well :)
Girl, you better just think positive just cos it happened to one person doesn't mean it's going to happen to you! Pregnancy is hard and it's bad enough thinking negatively. Good luck with your pregnancy