So, fiber became a buzz word a while back. The trouble with trends is that they aren’t always fully researched by everyone who hears about it. I realize this isn’t you, because you’re reading this, but it is always recommended to examine how much (or how little) of a good thing you really need.
Here’s an article from SFGate on fiber. They talk about what the benefits are, how much is enough, too little, and too much, as well as how to safely (and comfortably) increase your fiber intake if you need to do so.