Grain of Salt tip of the day. Books are good, but not all information in books are good. Particularly when the books start talking about everything that can possibly go wrong. Ectopic pregnancy. Placenta Previa. Spontaneous abortion (miscarriage). These are just some of the things that the professionals like to scare us with in their books. All of which we have absolutely no control over and (hopefully) we will never need to concern ourselves with.
This is akin to everyone telling us all their horror stories about how pregnancy is awful and how everything is going to go wrong. Only it’s not. And it doesn’t in the majority of pregnancies but nobody talks about those so we don’t hear about them.
So my advice: along with ignoring anecdotal horror stories, skip the parts of the books that cover what can go wrong during a pregnancy. If any of those happen, we can deal with them as they come. But I don’t need to worry about things that are never going to happen. Like the sun going nova in the next million years or so.