NSFW: Maternal Mortality

I’m currently 26 weeks pregnant and touchwood everything is completely fine. I think my pregnancy hormones are trying to flare up my overthinking, and I suddenly remembered a friend of a friend, who passed away while giving birth, 5 years ago. At that time, I wasn’t even married and it was just sad to know it. My friend had told me her blood pressure had suddenly risen while pushing, and she had passed away. Suddenly now, I am terrified. I tried to look it up online but can hardly find anything reassuring. How common is it? Is there a way to know beforehand if something like that’s gonna happen? Y’all will get it: I am more worried about my babygirl than anything else in this world.